TM-9-2320-361-20
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
OCTOBER 1991
TM-9-2320-361-20 - Page 437 of 1207
TM 9-2320-361-20
4-14. TACHOMETER DRIVE SHAFT AND DRIVE CORE MAINTENANCE
This task covers:
a. Removal
c. Installation
b. Inspection
INITIAL SETUP:
APPLICABLE MODELS
All
REFERENCES (TM)
TM 9-2320-361-10
MATERIALS/PARTS
TM 9-2320-361-20P
Three locknuts
EQUIPMENT CONDITION
Lockwasher
●
Parking brake set (TM 9-2320-361-10).
Ž Hood raised and secured (TM 9-2320-361-10).
●
Battery ground cable disconnected (para. 4-48).
1.
2.
3.
4.
5.
6.
7.
8.
9.
Turn four lockstuds (4) 1/4 turn left and pull instrument cluster (3) away from instrument panel (5).
Disconnect tachometer drive shaft (1) from tachometer (2).
Disconnect tachometer drive shafi (1) from tachometer drive unit (20).
Remove two locknuts (8), screws (15), four clamps (9), tachometer drive shaft (l), and wiring
harness (7) from two brackets (17). Discard locknuts (8).
Remove locknut (23), screw (21), clamp (22), and tachometer diveshaft. (1) from bracket (19).
Discard locknut (23).
Remove two screws (10), washers (11), and brackets (17) from rocker arm cover (16).
Remove nut (25), lockwasher (24), and bracket (19) from air compressor stud (18). Discard
lockwasher (24).
Remove grommet (12) and tachometer drive shaft (1) from firewall (13).
Remove two clamps (9) and clamp (22) from tachometer drive shaft (l).
Inspect drive shaft drive core (14) and grommet (12). Replace if defective.
1.
2.
3.
4.
5.
6.
7.
8.
9.
4-26
Install two clamps (9) and clamp (22) on tachometer drive shaft (l).
Install tachometer drive shafl (1) and grommet (12) in firewall (13).
Install two brackets (17) on rocker arm cover (16) with two washers (11) and screws (10).
Install bracket (19) on air compressor stud (18) with new lockwasher (22) and nut (25).
Connect tachometer drive shaft (1) to tachometer drive unit (20).
Connect tachometer drive shafl. (1) to tachometer (2).
Install tachometer drive shafl (l), clamp (22), screw (21), and new locknut (23) on bracket (19).
Install tachometer drive shaft (1) and wiring harness (7) on two brackets (17) with four clamps (9),
two screws (15), and new locknuts (8).
Position instrument cluster (3) on instrument panel (5) and lock in place by turning four lock-
studs (4) 1/4 turn to right.
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