TM 9-2320-279-34-3
M977, M985, and M984E1 Crane Maintenance Instructions (Cont)
17-25.1 HOIST ADJUSTMENT (M984E1).
This task covers:
a. Adjustment
b. Follow-on Maintenance
INITIAL SETUP
Models
M984E1
Test Equipment
None
Special Tools
None
Supplies
None
Personnel Required
MOS 63W, Wheel vehicle repairer (2)
References
None
Equipment Condition
TM or Para
Condition Description
TM 9-2320-279-10 Shut off engine.
TM 9-2320-279-10 Outriggers extended.
Special Environmental Conditions
None
General Safety Instructions
None
Level of Maintenance
Direct Support
a.
Adjustment.
NOTE
Crane must be at normal operating temperature for
adjustment.
(1)
Remove cap (1) and attach suitable pressure
gage to test port (2).
(2)
Loosen screw (3) and remove plug (4) and
seal (5).
NOTE
Plug and internal screw are located in lower right
corner of valve body.
(3)
Remove plug (6) and preformed packing (7).
(4)
Push up and hold solenoid valve button (8).
(5)
Put crane in operating condition
(TM 9-2320-279-10).
CAUTION
Do not operate crane with boom below
horizontal when there is a load on hook.
(6)
Attach crane (9) to an immovable
object (10).
Change 3
17-116.1
