SANY SRT95C Off-Highway Truck. Service Manual

ports 'A' and 'B' of the service brake piston
housing (48) and marks properly, referring
to Fig.2. Plug the pipes and ports to prevent
contamination and keep oil in the pipes and
housing.
6. Remove the service brake pipe from the
port 'C'of the service brake piston housing (48)
and  mark properly, referring to Fig.2. Plug the
pipes and ports to prevent contamination and
keep oil in the pipes.
7. Remove the parking brake pipe from the
port 'D' of the service brake piston housing (48)
and mark properly, referring to Fig.2. Plug the
pipes and ports to prevent contamination and
keep oil in the pipes.
8. Remove the wheel assembly from the truck
as  described  in  Chapter  4  'REAR  WHEEL
ASSEMBLY'.
9. Orient the driving wheel (2) upwards and
place  the  wheel  assembly  in  a  horizontal
position. Remove and discard the O-ring (5)
from the outer diameter of driving wheel (2).
10. Remove the bolt (4) and hardened washer
(3) securing the driving wheel (2) to the wheel
and use a proper lifting device to remove the
driving wheel from wheel.
11. Remove the O-ring (1) from the wheel and
discard it.
12.  Remove  the  inner  seal  housing  (15).
Remove and discard the O-ring (16).
13. Remove the dynamic seal assembly (19)
from the inner seal housing (15) and driving
disc  (36),  and  discard  the  'O'rings.  The
reserved metal seal elements are put aside for
inspection.
14.  Remove  one  bolt  (20)  and  hardened
washer  (21)  from  the  spring  housing  (22)
and  the  service  brake  piston  housing  (48)
respectively. The two bolts removed should
be located as close to 12 o'clock as possible.
Then intall a lifting eye in each bolt hole.
15. Connect a proper lifting device to the lifting
eyes installed on the disc brake assembly in
Step 14 and tension it upwards. Then remove

Rear Axle Assembly And Installation

the nut (54). Use lifting device to carefully
remove the disc brake assembly from the

spindle. Place it in a clean flat area with the

spring housing (22) oriented upwards.
16. Repeat Steps 3-15 to remove the opposite
disc brake assembly.

Disassembly

Refer to Fig.3 for numbers in the brackets.

warning

To prevent personal injury and equipment

loss, it should be ensured that the hoist

equipment has sufficient carrying capacity

and the wheels are reliably fixed and

chocked to enable safe operation.

1. Remove the lockwire (6) on the bolt (7), and
remove the bolt (7) and washer (8) securing
the outer seal housing (9) to the driving disc
(36). Then remove the outer seal housing.
2. Remove and discard the O-ring (35) from
the outer diameter of driving disc (36).
3. Remove the dynamic seal assembly (12)
from the driving disc (36) and discard its O-ring.
The reserved metal elements should have no
scratch or damage.
4. Use a proper lifting device to carefully lift
the driving disc (36) out of the disc brake
assembly. Use a lifting device to turn over
the disc brake assembly to orient the service
brake piston housing (48) upwards.
5. Remove and discard the O-ring (5) from the
service brake piston housing (48). If necessary,
the bleeder screw (49) can be removed from
the service brake piston housing.
6. Remove the plug (51) and the O-ring (5)
on the service brake piston housing (48) and
discard the O-ring.
7. If necessary, remove the stud (53) from the
service brake piston housing (48).
8. Remove the bolt (20) and washer (21) from

Rear Axle Assembly And Installation

the service brake piston housing (48).
9. Remove the socket head screw (23)
and hardened washer (21) with great care.
Alternately unscrew each screw by one turn
every time to prevent the service brake piston
housing (48) pressed by the springs (27 and
28) from being ejected.

warning

To prevent personal injury and equipment

damage, take great care to remove the

socket head bolt (23) and hardened washer

(21) , for the spring housing (22) is under

the pressure from the springs (27, 28).

10. Use a proper lifting device to remove the
service brake piston housing (48) from the

brake housing(34) , and place it in a flat area

with service brake piston (40) side oriented
upwards.
11. Remove and discard the 'O'rings (24 and
13) from the service brake piston housing(48).
12. Use the tool shown in Fig.4 (

Note

: The tool

can be fabricated as shown in Fig.20). Screw
the T handle of the tool into the threaded hole
in the end of a return pin (45). Place the base

of this tool on the flat surface of service brake

piston (40). Press down the handle of the tool
to raise the return pin (45) and compression
spring (36) until the pin (44) is pulled out of
the return pin. Then remove the tool. Refer to
Fig.5.
13. Repeat Step 12 to remove the pin (44) on
each return pin (45).

Fig.4 Spring compression tool

Fig.5 Schematic diagram for operation of
spring compression tool

Rear Axle Assembly And Installation

14. Install three M12 bolts in three threaded
holes on the service brake piston (40) for
pulling. Alternately screw in the bolts to
gradually pull the service brake piston (40) out
of the service brake piston housing (48). Then
remove the three pulling bolts and remove the
service brake piston. Refer to Fig.6.
15. Remove and discard D-rings (46, 47) from
the service brake piston housing (48).

16. As the spring (43) is under the mounting
plate (42), the mounting plate (42) and bolt (41)
for fixing the spring (43) should be removed
from the service brake piston housing (48)
with great care. Refer to Fig.7.
17. Remove the return pin (45) and return
spring (43) from the service brake piston
housing (48). Refer to Fig.7.

18. Remove the damper plate (37) in one side
of the brake disc housing (34). Subsequently,
remove all friction plates (39) and friction discs

(38) alternately until the baffle (28) in the other

side is removed. Refer to Fig.8.
19. If necessary, remove the pin (33) from the
brake disc housing (34).
20. Use a lifting device to turn over the brake
disc housing (34) to orient the spring housing
(22) side upwards. Remove the bolt (20) and
hardened washer (21) from the spring housing
(22).

Fig.6 Schematic diagram for service piston
removing

Fig.7 Schematic diagram for returen pin and
spring removing

spring

Fig.8 Schematic diagram for friction pack
removing

Rear Axle Assembly And Installation

Fig.9 Schematic diagram for spring housing
removing

Fig.10 Hoist tool

warning

For the spring housing is under the

pressure from spring (27, 28), to prevent

personal injury and equipment damage,

take great care to remove the socket head

bolt (23) and hardened washer (21) from

the spring housing (22).

21. Alternately unscrew socket head screws
(23)  by  one  turn  every  time,  and  remove
them along with the hardened washers (21).
Then use a lifting device to remove the spring
housing (22) from the brake disc housing (34).
Refer to Fig.9.
22. Remove and discard the O-ring (24) from
the spring housing (22). Remove the springs
(27, 28) from the parking piston (30).
23.  Use  the  lifting  tool  shown  in  Fig.10  to
lift and remove the parking piston (30), and
the lifting tool can be fabricated according
to Fig.23. Place legs of the tool on the edge
of brake disc housing to make the tool over
parking piston. Align the three holes of the
tool with three threaded holes in the parking
piston. Then insert three M12 bolts through
the three holes into the three threaded holes
in the parking piston. When screw the bolts
downwards,  the  parking  piston  will  move
upwards until out of the brake disc housing
due to the support of lifting tool. Then lift out
the parking piston. Refer to Fig.11.
24. Remove and discard the OG seal ring (25)
and Guiding belt (26) from the parking piston
(30).
25. If necessary, the pin (29) can be removed
from the parking piston (30).
26. Remove and discard the OD seal ring (31)
on the brake disc housing (34). Then remove
the Guiding belt (32).
27. If necessary, remove the pin (33) from the
brake disc housing (34).

Fig.11 Schematic diagram for parking piston
removing

Rear Axle Assembly And Installation

Inspection

Detection procedure for the wearing of

brake disc assembly

Note

: This detection should be performed

before the removing and disassembling of disc
brake assembly so that the wearing extent of
brake disc components can be determined.
1.  Pull  out  the  parking/emergency  brake
control button. Pressure should be generated
in the parking brake cavity and the parking
brake  springs  (27,  28;  Fig.1)  should  be
compressed.
2.  Press  down  the  service  brake  pedal  or
turn the retarder selection mode switch (if
equipped)  to  the  disc  brake  position,  and
place the retarder control lever in the applied
position. Pressure should be generated in the
service brake piston cavity.
3. Carefully remove the plug (52) from the
service brake piston housing (48).
4. Insert a depth micrometer into the plug hole
and measure distance from end of return pin
(45) to machined surface on the service brake
piston housing (48). This is dimension 'A'.
Record this dimension.
5. Record the dimension that is stamped on
the service brake piston housing (48). Subtract
the stamped dimension from dimension 'A'
( referring to Step 4). The difference is the
amount of brake wear. Refer to 'Wear limit of
disc brake' table for allowable wear limits.

Wear limits for new and worn brake disc

Thickness of friction plate

New plate:……....................……5.08±0.13 mm

(0.200±0.005 in)

Minimum allowable dimension of worn pla
te:.......................................4.57 mm (0.180 in)

Thickness of friction disc

New disc:…........................…2.413±0.064 mm

(0.095±0.0025 in)

Rear Axle Assembly And Installation

Minimum allowable dimension of worn disc:…

….....................................……2.29 mm (0.090
in)

Thickness of damper plate

New plate:……....................……6.9±0.051 mm

(0.270±0.020 in)

Compression state after use:..........…5.84 mm

(0.230 in)

Wear limit of disc brake

Quantity

Thickness (mm)

New

Old

Friction plate

66.04

59.41

Friction disc

28.96

27.48

damper plate

13.8

11.68

Stack

thickness

108.8

98.57

Maximum

allowed limit

10.23

Disassembled parts

Refer to Fig.3 for the numbers in the brackets.
1. Use a proper solvent to clean all parts.
2. After cleaning, immediately dry all parts with
compressed air.
3. After cleaning and drying, coat all parts with
light oil to prevent corrosion.
4. The sealing face of dynamic seal
assemblies (3 and 11) metal rings must be
carefully inspected to determine if reuse is
possible. The sealing band, which is a highly
polished surface on the sealing face of each
metallic ring, must be within the outer half of
the total seal area, be concentric with the seal
face diameters, of uniform width and free from
wear marking. Refer to Fig.12.

Note

: The metal sealing elements between

brake assemblies are not allowed to be
interchanged. Otherwise, poor assembling
will be caused in the seal housing (9) and
correct sealing contact between metals will be

Fig.12 Schematic diagram for the wearing
inspection of dynamic seal

If the worn areas
are concentrically
distributed in the
relatively outer side
of seal ring, then it
will be allowed to
be used further.

If  the  worn  areas
are  distributed  in
a  non-concentric
form or near inner
side  of  seal  ring,
t h e n   i t   w i l l   b e
disallowed  to  be
used further.

Rear Axle Assembly And Installation

influenced.

Note

: When the metal ring which has already

conformed to inspection requirements is used
for assembling, a slight 'overlap' condition,
related to the original orientation of the seal
faces,  could  occur  and  cause  initial  light
leakage which will stop immediately when the
assembly starts.
5. Before installing the disc brake assembly,
clean  all  exterior  surfaces  to  remove  any
foreign material.
6. Inspect all splines for cracked or broken
teeth, excessive wear and pitted or scored
surfaces. Repair or replace as requirements.
7. Check for pitted, scored or worn mating
surfaces of housings.
8.  Check  all  threaded  holes  and  threaded
parts for dirt or damaged threads. Repair or
replace as requirement.
9. Check seal surfaces of service  brake piston
(40) for pitting, scoring or wear. Repair or
replace as requriements.
10. Check springs (27, 28 , 43) for cracks or
other damage and for spring tension.
11. Check all friction plates (38) and friction
discs (39) contact surfaces for nicks, pits or
corrosion. Check teeth of friction plates and
friction discs for wear and damage.

12. Check finished surfaces of all other parts

for scored or worn surfaces. Repair or replace
if necessary.

Assembly

Refer to Fig.3 for the numbers in the brackets.

warning

To prevent personal injury and equipment

damage, it must be ensured that the hoist

equipment is reliably connected and

has sufficient carrying capacity for safe

operation.

Rear Axle Assembly And Installation

Note

: All 'O'rings, seal rings and contacting

surfaces  must  be  clean  and  lubricated  at
assembling.
1. Use a lifting device to place the brake disc
housing (34) in a clean level place with the
side installed with the spring housing (22)
oriented upwards.
2. Install the removed pin (33) into the brake
disc housing (34).
3. Stretch new seal ring (31) slightly. Lubricate
seal  groove  in  disc  housing  (34)  and  seal
ring (31) with 'Wynns S. T. P.' to aid seal ring
installation. Install seal ring (24).
4. Lubricate guiding belt (32) with 'Wynns S. T.
P' and install in disc housing (25) as shown in
Fig.13.
5. Install the pin (29) on the parking piston (30).
6.  Use  'Wynns  S. T.  P.'  special  grease  to
lubricate the new seal ring (25) and the groove
in the outer diameter of parking piston (30).
Then install the seal ring (25).
7.  Use  'Wynns  S.  T.  P.'  special  grease
to  lubricate  the  guiding  belt  (26)  and  its
surrounding area, and then install it into the
parking piston (30) as shown in Fig.13.
8. Use 'Wvnns S. T. P.' to lubricate the seal
ring (31) and its surrounding area, and then
install the parking piston (30) into the brake
housing (34).
9. Place the spring housing (22) on the parking
piston (30) to align with the pin (29). Rotate
the spring housing (22) to align the pin (33) in
the brake disc housing (34) with the hole in it
so that it can be positioned. Then use six bolts
(20) to seat the parking piston (30) into the
brake disc housing (25). During the operation,
take care to avoid damage to the seal rings
(25, 31). Then remove the bolt (20) and spring
housing (22).
10.  Install  the  springs  (27,  28)  in  bores  in
parking  piston  (30),  as  is  shown  in  Fig.9.
Install new O-ring (24) in the groove of the
spring housing (22).
11. Use a lifting device to carefully place the

Fig.13 Schematic diagram for the installation
of driving disc

Rear Axle Assembly And Installation

spring  housing  (22)  over  the  springs  (27,
28)  in  the  brake  disc  housing  (25). Then
align the springs with the spring bores in the
spring housing and align the pins (29) with
dowel holes in the spring housing to facilitate
installation.
12.  Install  five  socket  head  bolts  (23)  and
hardened washers (21) into the holes under
protruding ears on the spring housing (22).
Alternately  tighten  the  socket  head  bolts
(23) by one turn every time. Haul the spring
housing (22) to overcome the resilience of
springs (27, 28) and press down to the brake
disc housing (34). Then tighten the socket

head screws (23) to the torque of 260~280N•m
(190~210 lbf•ft) torque.

13.  Install  the  bolts  (20)  and  hardened
washers  (21)  in  the  remaining  connecting
holes of spring housing (22) and brake disc
housing  (34),  and  tighten  the  bolts  to  the

torque of 260~280N•m (190~210 lbf•ft).

14. Use a lifting device to turn over the brake

disc housing (34) and place it on a clean flat

surface with the side equiped with the spring
housing (22) oriented downwards, as is shown
in Fig.14. Install the removed pin (33) in the
brake disc housing (34).
15. Use a lifting device to install the driving
disc (36) with its large end oriented upwards
in the brake disc housing (34), and use the
50x100mm (2x4in) blocks to block it up. Refer
to Fig.13.
16. Align the teeth on the damper plate (37)
with the inner teeth of brake disc housing (34).
Ensure that the outer end face is oriented
downwards to the parking piston (30).

Note

: Before the friction disc (38) is installed,

the friction plate should be coated with the
same type oil used in the system.
17. Align the inner teeth of friction plate (39)
with the spline groove on the driving disc (36)
and thread and mount it onto the driving disc.
18. Install the friction disc (38) onto the friction
plate (39). Alternately install both of them until

Fig.14 Schematic diagram for installation of
O-ring

Position of O-ring

Rear Axle Assembly And Installation

it is completed.
19. Install the other damper plate (37) onto
the last piece of friction plate (39). During
assembling, it should be noticed to orient the
cork side of the baffle upwards, and toward
the service brake piston (40).
20. Install three new 'O'rings(13) into the
counterbore in three holes in mounting face of
the brake disc housing(34).
21. Install the removed stud (53) in the service
brake piston housing (48).
22. Use a lifting device to place the service
brake piston housing (48) on a clean flat
surface with its inner face oriented upwards.
Install the return pin (45) and spring (43) into
the corresponding hole of service brake piston
housing (48).
23. Install the mounting plate (42) over the

return pins (45) and springs (43) and fix it with

the bolts (41). Slightly stretch a new D seal
ring (46) and install it along with the new D
seal ring (47) in the inner and outer grooves in
service brake piston housing (48) respectively.

Caution

: Ensure that the D seal rings are

installed in position. Their twisting and
inclination will lead to oil leakage of the service
brake cavity.
24. Install the service brake piston (40) with

its flat surface oriented upwards in the service

brake piston housing (48). Ensured that three
13 mm holes in the service brake piston are
aligned with three M12 threaded holes in the
piston housing. During assembling, take care
to prevent the two D seal rings in the piston
housing assembly from being damaged.

Then, insert three M12 bolts with flat washers

through the service brake piston and screw
them in the piston housing. Alternately screw
the bolts by one turn every time to haul the
piston downwards in positon.
25. Use the spring compression tool which
is shown in Fig.4 and can be fabricated
according to Fig.20. As is shown in Fig.5,
screw the threaded end of T handle on the tool

Rear Axle Assembly And Installation

into the threaded hole of a return pin (45).
26. Then, place the base of the tool on the
flat surface of service brake piston (40) and
press down the handle of tool to pull the return
pin (45) up far enough to insert the pin (44)
into the hole in the end of return pin (45),
as is shown in Fig.5. Release pressure on
tool handle, making sure pin (44) is inserted
far enough into return pin (45) to clear both
sides of return pin hole in service piston (31).
Remove the spring compression tool.
27. Repeat Step 26 and install the pin (44) in
each return pin (45).

28. Remove three M12 bolts and flat washers.

29. Install the new O-ring (24) on the service
brake piston housing (48) as shown in Fig.15.
30. Use a lifting device to turn over the service
brake piston housing (48) with service brake
piston (40) downwards.
31. Install the bleeder screw (49) in the service
brake piston housing (48).
32. Replace the O-ring in the plug (51) with
new one. Then install them together in the
service brake piston housing (48).
33. Using a proper lifting device to hang the
service brake piston housing (48) on the brake
disc housing (34), making sure the pin holes
in housing are aligned with pins (33) on disc
housing. Gradually lower piston housing onto
disc housing.
34. Install five socket head screws (23), with
hardened washers (21), in the holes under
protruding ears on service brake piston
housing (48). Tighten socket head screws (45)
alternately, one turn at a time, to draw piston
housing assembly down on disc housing (34).
Tighten socket head screws (23) to a torque of

260 - 280 N•m (190 - 210 lbf•ft).

35. Install the bolt (20) and hardened washer
(21) in the service brake piston housing(48).
Tighten the bolt (20) to a torque of 260-280

N•m.

Note

: The disc brake assembly should be

turned over with care to prevent the driving

Fig.15 Dynamic seal installation tool– seal
sleeve

Rear Axle Assembly And Installation

disc (36) from sliding out of the brake disc
housing (25).
36. Place the brake assembly in a vertical
position and keep the bleeder screw (49)
located at the 12 o’clock position, referring to
Fig.2. Connect a portable hand pump to the
port ‘C’ and inject clean brake hydraulic oil
into the port to pressurize service brake piston
cavity to 52 bars. While injecting oil to the port
‘C’ to pressurize, slightly open the bleeder
screw (49, Fig.2) to release the residual air

in the cavity until clean oil flows from bleeder

screw. Then  close  the  bleeder  screw  and
pressurize the piston cavity to 52 bars. Repeat
applying and releasing pressure for 10 times.
After the piston seal ring is set in position,
shut down the hand oil pump and maintain
the 52 bar pressure. After it is maintained
for 15 minutes, if the pressure drop in the
service brake piston cavity does not exceed
3.5 bars, this service brake piston assembly is
acceptable.
37. Disconnect the pump hose from the port
‘C’, and connect it to the port ‘D’ ( Fig.2) to
set the parking piston seal ring in position and
carry out pressure test. Start to pressurize
the  parking  brake  piston  cavity,  and  open
the bleeder screw (49, Fig.2) slightly until all
residual air in the cavity is released and clean
oil flows out, then close the bleeder screw
and pressurize to 83 bars. Repeat applying
and  releasing  pressure  for  10  times. After
the parking piston seal ring is set in position,
shut down the hand oil pump and maintain
the 83 bar pressure in the piston cavity. If
the pressure drop in the parking brake piston
cavity  does  not  exceed  7  bars  after  the
pressure is maintained for 15 minutes, this
parking brake piston assembly is acceptable.

Installation

Refer to Fig.1 and Fig.2 for numbers in
brackets.

Rear Axle Assembly And Installation

warning

To prevent personal injury and equipment

loss, it should be ensured that the hoist

equipment has sufficient carrying capacity

and the wheels are reliably fixed and

chocked to enable safe operation.

1. Install new O-ring (5) in the counterbore
on the mounting surface of the service brake
piston housing (48).
2. Remove one bolt (20) and hardened washer
(21) from the spring housing (22) and service
brake piston seat ring (48) respectively. In
addition, the two bolts removed should be
located as close to 12 o'clock as possible.
Then install a lifting eyes in each bolt hole.
3. Connect a lifting device to the lifting eyes
on the disc brake assembly. Then lift the brake
assembly on the spindle.

Caution

: When installing the right brake

assembly, its ‘INLET’ port is located on the
top. When installing the left brake assembly,
its ‘INLET’ port is located at the bottom.
Align and install the studs (57) on the brake

assembly with the holes in the spindle flange.

During installation, it should be ensured that
the O ring (5) is maintained in the counterbore
on the piston housing assembly.
4. Install the locknuts (58) on the studs (57)

and tighten to a torque of 1166 -1193 N•m.

Note

: Prior to installing the dynamic seal

assembly (12), clean O ring and metal ring in
the trichloroethane liquid.

Note

: The seal installation tool (refer to the

special tools) consists of seal sleeve, seal
driver and a spring.
5. Insert the seal sleeve tool shown in Fig.15,
into the spring housing until it is in as far as it
can go.
6. Insert seal installation kit spring on one
metal seal ring of dynamic seal assembly (12).
The spring prevents the metal ring from riding

Rear Axle Assembly And Installation

up the ramp of the groove hence leading to
easier installation.
7. Install one half of dynamic seal assembly
with O-ring and spring fitted into the spring
housing  (22)  through  the  bore  of  the  seal
sleeve. It should be ensured that a clearance
from  the  rope  connected  to  the  spring  is
present so that the spring can be easily pulled
out  after  the  installation  of  dynamic  seal
assembly.
8.  Use  the  seal  driver  as  shown  in  Fig.16
to press the dynamic seal assembly (12) in
position until the inside face of seal driver
is flush with the outside face of seal sleeve.
Refer to Fig.17.
9. Remove the seal driver, and slowly remove
the seal sleeve out of the spring housing (22).
Subsequently, pull out the spring from the
dynamic seal assembly (12). Then apply a thin
film of lubricating oil to the metal contacting
surface of dynamic seal assembly.
10. Install the O ring on the other half dynamic
seal  assembly  (12)  and  install  in  the  seal
housing  (9)  with  the  O  ring  side  oriented
downwards. Press the seal assembly into the
housing.
11.  Coat  the  O-ring  (35)  with  grease  and
install it in the driving disc (36). In addition,

apply a thin film of lubricating oil on the metal

contacting face of dynamic seal assembly
(12). Install the seal housing (9) with half seal
assembly on the driving disc (36) and use the

bolt (7) and washer (8) for fixing. Then use the

lockwire (6) to lock the bolt (7).

Note

: Ensured that the lockwire (6) will not

interfere with the O ring (8) on the driving
wheel when driving wheel is installed on the
disc brake assembly.

Note

: Prior to installing the dynamic seal

assembly (3), clean the dynamic seal
assembly (3) in trichlorethane liquid. Apply a

thin film of oil to the metal contacting surfaces

of the dynamic seal assembly.
12. Use the installation tool to install half of the

Fig.17 Schematic diagram for installation of
dynamic seal assembly

Seal driver

Seal sleeve

Spring housing

Driving

disc
Seal

ring

Dynamic seal

O-ring

Spring

Fig.16 Dynamic seal installation tool- seal
driver

Rear Axle Assembly And Installation

new dynamic seal assembly (19) with the O
ring side oriented inwards over spindle. Using
seal installation tool, press dynamic seal
assembly into disc driver (27) by tapping the
tool with a soft hammer. Then remove the tool.
13. Use the tool to press and install the other
half of new dynamic seal assembly (19) with
its O ring side oriented inwards into the inner
seal seat ring (15). Then remove the tool.
14. Coat the O ring (16) with grease and install
it in the seal groove. Install the other half
dynamic seal assembly (19) in the inner seal
housing (15). Then install the inner housing
(15) in the brake assembly.
15. Install new O ring (1) in groove on the
groove.
16. Install the driving wheel (2) on the wheel
and use the bolt (4) and hardened washer (3)

for fixing. During installation, ensured that the

O ring stays in the groove on the wheel. Then
tighten the bolt (4) to a torque of 1166 -1193

N•m.

17. Install new O ring (5) on the driving wheel
(2).
18. Refer to the requirements described in
Chapter 1 'Tyre and Rim Assembly' and install
the wheel on the spindle. When the driving
wheel (2) is inserted into the driving disc (36),
the splines on the driving wheel (2) and driving
disc (36) should be aligned carefully, and it
should be noticed not to damage the O-ring (5).
19. Add 11 litres (3 US gallons) clean hydraulic
oil of the same type used in the brake cooling
circuit into the service brake pack. Block the
port ‘A’ (outlet) on the brake assembly on the
opposite and pressurize the brake assembly
with 2 bar air pressure through the port ‘B’
(inlet). Refer to Fig.2.

Note

: Refer to Fig.18. For brake pressure

testing, the flange plates for port ‘A’ and ‘B’
can be fabricated according to Fig.20 and
Fig.21.
While rotating the wheel, observe for air
pressure loss on the air supply hose gauge.

Rear Axle Assembly And Installation

SANY SRT95C Off-Highway Truck. Service Manual - page 11