Caterpillar Cat 365B EXCAVATOR (Prefix BTH) Service Repair Manual (BTH00001 and up)

1
Service Repair Manual
Models 365B EXCAVATOR
2
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Product EXCAVATOR Model 365B EXCAVATOR
BTH Configuration ISJ HEX COMMONALITY CHART
BTH00001-UP (MACHINE) Disassembly and
Assembly 365B, 365B Series II, 365BL and 365BL
Series II Excavators Machine Systems Media Number
-RENR1970-10 Publication Date -01/02/2015 Date
Updated -16/02/2015
i01492295
Travel Motor - Disassemble SMCS -
4351-015 Disassembly Procedure Table 1
Required Tools Required Tools Required Tools Required Tools
Tool Part Number Part Description Qty
(A) 1P-1864 Pliers 1
(B) 1P-1858 Pliers 1
(C) 138-7575 Link Bracket 2
(D) 1P-0520 Driver Group 1
Start By A. Remove the travel motor. Refer to
Disassembly and Assembly, "Travel Motor - Remove
and Install " in this manual. NOTICE Care must
be taken to ensure that fluids are contained
during performance of inspection, maintenance,
testing, adjusting and repair of the product. Be
prepared to collect the fluid with suitable
containers before opening any compartment or
disassembling any component containing
fluids. Refer to Special Publication, NENG2500,
"Caterpillar Tools and Shop Products Guide" for
tools and supplies suitable to collect and
contain fluids on Caterpillar products.
3
Dispose of all fluids according to local
regulations and mandates.

• Illustration 1 g00574938
• Thoroughly clean the outside of travel motor (1)
  prior to disassembly. Weight of the travel motor
  is 118 kg (260 lb).
• Place an alignment mark across all housings of
  the travel motor for assembly purposes.

Illustration 2
g00575049
Personal injury can result from parts and/or
covers under spring pressure. Spring force will
be released when covers are removed. Be prepared
to hold spring loaded covers as the bolts are
loosened.
4

1. Remove two socket head bolts (2) from brake cover
   (3) that are 180 degrees from each other. Replace
   these two bolts with bolts (4) that are slightly
   longer in length. The two longer bolts will
   retain the brake cover when the remaining ten
   socket head bolts (2) are removed.
2. Carefully remove the ten remaining socket head
   bolts (2) that retain the brake cover in
   position.
3. Remove two longer bolts (4) from the brake cover.

• Illustration 3 g00575127
• Remove two remaining hex head bolts (5) from
  brake cover (3) .
• Remove brake cover (3) from the head assembly.

Illustration 4 g00575184 8. If necessary, remove
the brake adjusting screws (6) from brake cover
(3) .
5
Illustration 5 g00575235 Note There is an inner
spring and an outer spring in each spring set. 9.
Remove twenty-four spring sets from the brake and
piston assembly.
Illustration 6 g00575277 10. Remove brake
assembly (9) from head assembly (8) .
Illustration 7
g00575512
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11. Remove ring (10) from brake assembly (9) .
Illustration 8 g00575556 12. Remove retainer
plate (11) from brake assembly (9) .
Illustration 9
g00575558
8
Illustration 10 g00575561 13. Remove external
discs (12) and internal plates (13) from brake
assembly (9) .
Illustration 11 g00575563 14. Remove piston (14)
from brake assembly (9) .
Illustration 12
g00575564
15. Remove seal (15) from piston (14) .
9
Illustration 13
g00575649

1. Remove O-rings (16) and (17) .
2. Remove retaining ring (18) from the shaft of the
   motor assembly. Remove gear (19) .

• Illustration 14 g00575651
• Use Tool (A) to remove retainer ring (21) .
• Note Measure the position of the rod assembly
  before removing. The nut and the rod assembly
  must be returned to the original location at
  assembly.
• Remove the nut and bushing (20) from the rod
  assembly.
• Remove four socket head bolts (22) from head
  assembly (8) .

10
Illustration 15 g00575693 21. Attach Tooling (C)
and a suitable lifting device to head assembly
(8). Carefully remove the head assembly from the
motor assembly. Weight of the head assembly is
244.7 N (55 lb). Note The port plate can remain
with the pump housing when the head assembly is
removed.
Illustration 16 g00616424 22. Remove port plate
(23) from head assembly (8) .
11
Illustration 17 g00616634 23. Remove plug (24)
from head assembly (8) .
Illustration 18 g00616668 24. Remove check valve
assembly (25) from head assembly (8) .

• Illustration 19 g00616670
• Remove stem (30) from check valve (25) .
• Remove seat (26), spring (27), guide (28), and
  seal (29) from stem (30) .

12

• Illustration 20 g00575822
• If necessary, remove pin (31) from the head
  assembly (8) .
• Remove O-ring seal (32) from the head assembly.
• Use Tooling (D) and a hammer to remove bearing
  (33) and seal (34) from the bore of the head
  assembly.
• Note The port plate can remain with the head
  assembly when the head assembly is removed from
  the pump housing.

Illustration 21 g00577021 30. Remove rod
assembly (35) from motor housing (37). If
necessary, remove port plate (23). Remove O-ring
seal (36).
13
Illustration 22 g00577022 Note Barrel assembly
must remain intact during removal. 31. Position
motor housing (37) sideways. Carefully remove
barrel assembly (38) .
Illustration 23 g00577024 32. Place
identification marks on piston assemblies (39),
retainer (40), and barrel (38). These components
must be reinstalled in the original location.
14
Illustration 24 g00577025 33. Remove piston
assemblies (39) and retainer (40) from barrel
(38) .
Illustration 25
g00577026
Illustration 26 g00577029 34. Remove piston
assemblies (39) from retainer (40) .
15
Illustration 27
g00577031
Illustration 28 g00577032 35. Remove guide (41),
shims (42), and spring assembly (43) from barrel
(38) .
Illustration 29 g00577089 36. Use Tooling (B) to
remove retaining ring (44) from shaft assembly
(45) and motor housing (37) .
16
Illustration 30 g00577092 37. Use a soft hammer
to drive shaft assembly (45) from motor housing
(37) .
Illustration 31 g00577114 38. Remove cover (46)
from shaft assembly (45) .
Illustration 32
g00577116
39. Remove seal (47) from cover (46) .
17
Illustration 33 g00577118 40. Use Tool (A) to
remove retaining ring (48) from shaft assembly
(45) .
Illustration 34
g00577120
Illustration 35 g00577121 41. Use a press to
remove bearing (49) and spacer (50) from shaft
(45) .
18
Illustration 36 g00577156 42. Remove swashplate
(51) from motor housing (37) .
Illustration 37
g00577157
43. Remove plate (52) from swashplate (51) .
19
Illustration 38 g00577158 44. Remove machine
screws (53). Remove retainer plate (54) and
plunger (55) from swashplate (51) .
Illustration 39 g00577160 45. If necessary,
remove stopper (56) and pin (57) from swashplate
(51) .

• Illustration 40 g00577635
• Remove valve cartridge (58) from motor housing
  (37) .
• Remove two pistons (59) from the motor housing.
• Remove the two machine screws (60) and bearings
  (61) from the motor housing.

20
Illustration 41 g00577571 49. Remove seal (62)
from rod assembly (35) .

• Illustration 42 g00577636
• Remove rings (64) from valve cartridge (66) .
• Remove seals (63) and (65) from the valve
  cartridge.

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21
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Product EXCAVATOR Model 365B EXCAVATOR
BTH Configuration ISJ HEX COMMONALITY CHART
BTH00001-UP (MACHINE) Disassembly and
Assembly 365B, 365B Series II, 365BL and 365BL
Series II Excavators Machine Systems Media Number
-RENR1970-10 Publication Date -01/02/2015 Date
Updated -16/02/2015
i01492280
Travel Motor - Assemble SMCS - 4351-016 Assembly
Procedure Table 1
Required Tools Required Tools Required Tools Required Tools
Tool Part Number Part Description Qty
(A) 1P-1864 Pliers 1
(B) 1P-1858 Pliers 1
(C) 138-7575 Link Bracket 2
(D) 1P-0520 Driver Group 1
(E) 141-4803 Gauge Block 1
(F) 6V-2021 Depth Gauge 1
Note Cleanliness is an important factor. Before
assembly, all parts should be thoroughly cleaned
in cleaning fluid. Allow the parts to air dry.
Wiping cloths or rags should not be used to dry
parts. Lint may be deposited on the parts which
may cause later trouble. Inspect all parts. If
any parts are worn or damaged, use new parts for
replacement. Note Apply a light film of "10W"
oil to all components before assembly.
22

• Illustration 1 g00577636
• Install seals (63) and (65 ) on valve cartridge
  (66) .
• Install rings (64) on the valve cartridge.

Illustration 2
g00577571
3. Install seal (62) on rod assembly (35) .
Illustration 3
g00577635
23

1. Install bearings (61) in motor housing (37).
2. Apply 9S-3263 Thread Lock Compound to two machine
   screws (60). Install the machine screws in motor
   housing (37) and tighten to a torque of 5 Nm (44
   lb in).
3. Install two pistons (59) in motor housing (37) .
4. Install valve cartridge (58) in the motor housing.

Illustration 4 g00577160 8. Install stopper (56)
and pin (57) in swashplate (51) .

• Illustration 5 g00577158
• Install rods (55) and retainer plate (54) in
  swashplate (51) .
• Apply 9S-3263 Thread Lock Compound to machine
  screws (53). Install the machine screws in the
  retainer plate and the swashplate. Tighten the
  machine screws to a torque of 5 Nm (45 lb in).

24
Illustration 6
g00577157
11. Install plate (52) on swashplate (51) .
Illustration 7 g00577156 12. Carefully install
swashplate assembly (51) in motor housing (37) .
Illustration 8
g00577121
25
Illustration 9
g00577926

1. Install spacer (50) on shaft (45) .
2. Raise the temperature of bearing (49) to 135 C
   (275 F). Install the bearing on the shaft.

Illustration 10 g00577118 15. Use Tool (A) to
install retaining ring (48) on shaft assembly
(45) .
Illustration 11
g00577116
26
16. Install seal (47) on cover (46) .
Illustration 12
g00577114
17. Install cover (46) on shaft assembly (45) .
Illustration 13 g00577092 18. Install shaft
assembly (45) in motor housing (37) .
27
Illustration 14 g00577089 19. Use Tool (B) to
install retaining ring (44) on shaft assembly
(45) and motor housing (37) .
Illustration 15
g00577032
Illustration 16 g00577031 20. Install shims
(42), spring assembly (43), and guide (41) on
barrel (38) . Note Ensure that the components
are installed in the original location.
28
Illustration 17
g00577026
Illustration 18 g00577029 21. Install piston
assemblies (39) in retainer (40) .
Illustration 19
g00577025
29
22. Install piston assemblies (39) in retainer
(40). Install the retainer and piston assemblies
in barrel (38) .
Illustration 20 g00578188 23. Install rod
assembly (35) in motor housing assembly (37) .
Illustration 21 g00578190 24. Install barrel
assembly (38) in motor housing assembly (37) .
30
Illustration 22
g00577021

• Illustration 23 g00590470
• Turn the motor housing assembly upright. Ensure
  that the barrel assembly is clear of rod assembly
  (35). Ensure that the barrel assembly is properly
  seated on the swashplate.
• Install port plate (23) on the barrel assembly.
• Use Tooling (E) and Tooling (F) to measure
  dimension (X). The correct dimension is achieved
  by the changing of shims (42). Dimension (X) is
  3.95 0.20 mm (0.156 0.008 inch).
• Install O-ring seal (36) on motor housing
  assembly (37) .

31
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32
Illustration 24
g00578458
29. Install seal (34) in head (8) .
Illustration 25 g00578468 30. Use Tool (D) to
seat seal (34) in head (8) .
Illustration 26 g00578469 31. Lower the
temperature of bearing (33) and install the
bearing in head (8) .
33

• Illustration 27 g00575822
• Install pin (31) and O-ring seal (32) in head
  assembly (8) .
• Ensure that bearing (34) and seal (33) are
  properly lubricated.

• Illustration 28 g00616670
• Install seat (26), spring (27), guide (28), and
  seal (29) on stem (30) .
• Install stem (30) on check valve (25) .

34
Illustration 29 g00616668 36. Install check
valve assembly (25) in head assembly (8) .
Illustration 30
g00616634
37. Install plug (24) in head assembly (8) .
Illustration 31
g00616424
35
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