TM-9-2320-272-23-2
TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)
TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 2 OF 5
SEPTEMBER 2012
TM-9-2320-272-23-2 - Page 357 of 1417
Table
1.
Field Preventive Maintenance Checks and Services - Continued.
ITEM
NO.
INTERVAL
ITEM TO BE
CHECKED OR
SERVICED
PROCEDURE
EQUIPMENT
NOT READY/
AVAILABLE IF:
(1)
Remove stone shield (Volume 3, WP
0510).
(2)
Inspect power steering assist cylinder for
condition and security of mounting (Volume 3,
WP
0509).
(3)
Inspect hydraulic hoses and fittings between
frame and cylinder for loose connections, cracks, splits,
or damage that could cause hydraulic leaks. Tighten
hydraulic lines and fittings connections. Replace any
hydraulic line or fitting that has cracks, splits, or damage
that could cause hydraulic leaks (Volume 3, WP
0506).
(4)
Install stone shield (Volume 3, WP
0510).
f.
Inspect power steering pump for security of
mounting, leaks, and signs of damage. Tighten loose
mounting hardware.
g.
On M939/A1 series vehicles, inspect power
steering pump belts for tension and serviceability
(Volume 3, WP
0504).
h.
Inspect power steering pressure and return
hoses and fittings for loose connections, cracks, splits,
or damage that could cause potential hydraulic leaks.
Tighten loose hydraulic lines and fittings and replace any
hydraulic line or fitting that has cracks, splits, or damage
that could cause potential hydraulic leaks. Refer to
(Volume 3, WP
0504) for Ross steering gear, or (Volume
3, WP
0505) for Sheppard steering gear.
i.
Inspect power steering hydraulic lines between
steering gear and steering assist cylinder and fittings for
security of mounting, loose connections, cracks, splits,
or damage that could cause hydraulic leaks. Tighten
loose hydraulic lines and fittings, and replace any
hydraulic line or fitting that has cracks, splits, or damage
that could cause hydraulic leaks (Volume 3, WP
0507).
j.
Inspect steering gear for security of mounting
and signs of leaks.
(1)
Loosen bracket mounting screws
(Figure
5,
Item
3).
(2)
Tighten steering gear mounting locknuts
(Figure
5,
Item
1) 260 to 280 lb-ft (353 to 380 N·m).
(3)
Tighten locknuts (Figure 5, Item 2) 60 to 70 lb-
ft (81 to 95 N·m).
TM 9-2320-272-23-2
0207
0207-22
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