TM-9-2320-361-34
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
MAY 1992
TM-9-2320-361-34 - Page 521 of 764
TM 9-2320-361-34
15-48. HYDRAULIC CYLINDER REPAIR
THIS TASK COVERS:
a. Disassembly
c. Assembly
b.
Inspection
INITIAL SETUP
APPLICABLE MODELS
M764
TOOLS
General mechanic’s tool kit
(Appendix B, Item 1)
MATERIALS/PARTS
Three lockwashers (Appendix F, Item 131)
O-ring (Appendix F, Item 173)
Cotter pin (Appendix F, Item 5)
Washer (Appendix F, Item 267)
Packing, preformed (Appendix F, Item 181)
Packing set (Appendix F, Item 185)
Lubricating oil, OE/HDO 30 (Appendix C, Item 13)
REFERENCES (TM)
LO 9-2320-209 -12-1
TM 9-2320-361-10
TM 9-2320-361-34P
EQUIPMENT CONDITION
“
Parking brake set (TM 9-2320-361-10).
. Hydraulic tank drained (LO 9-2320-209-12-1).
●
Outrigger leg removed and disassembled
(para. 15-47).
a. Disassembly
NOTE
Have drainage container ready to catch oil.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Pull rod (7) from cylinder (18) as far as possible and drain oil into container.
Remove tubes (16) and (19) and connectors (17) and (20) from cylinder (18).
Loosen cylinder head (8) and remove rod (7) from cylinder (18).
Remove cotter pin (15), nut (14), two retaining plates (10), two cups (12), follower (13), and
preformed packing (11) from rod (7). Discard cotter pin (15) and preformed packing (11).
Remove cylinder head (8) from rod (7).
Remove O-ring (9) from cylinder head (8). Discard O-ring (9).
Remove three screws (6), lockwashers (5), retainer (3), and rod wiper (4) from cylinder head (8).
Discard lockwashers (5).
Remove rod wiper (4) from retainer (3).
Remove packing set (2) and washer (1) from cylinder head (8). Discard packing set (2) and washer (1).
b.
Inspection
Inspect all parts for bends, cracks, chips, grooves, burrs, and scoring. Replace if damaged.
NOTE
Install packing set with tapered end toward washer.
1. Coat packing set (2) with oil and install new washer (1) and packing set (2) in cylinder head (8).
2. Install rod wiper (4) in retainer (3).
3. Install retainer (3), wiper (4), three new lockwashers (5), and screws (6) on cylinder head (8).
15-210
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