This task covers:
f. Follow-on Maintenance
Tools and Special Tools:
Pan, Drain, 4-Gallon (MIL-P-45189)
Tool Kit, General Mechanic's: Automotive
Wheels chocked (TM 9-2320-279-10)
Wrench, Combination, 1 1/4 in. (GGG-W-636)
Engine turned off (TM 9-2320-279-10)
Special Environmental Conditions
Adhesive-Sealant, Silicone, RTV (Item 6,
Cleanliness is extremely important when working on
hydraulic equipment. Clean all parts before
disassembly and work in a clean area.
Tag, Identification (as required) (Item 23,
(1) Raise main frame (1) and support with wooden block.
Place drain pan under manifold to catch excess oil.
Tag and mark all hoses prior to removal.
Cap and plug all hoses upon removal.
Hook arm manifold is non-functional on Model B trucks.
(2) Remove two hoses (2) and (3) from adapters (4).
Hook arm manifold will have hydraulic pressure behind it. Loosen screws equally
and cover manifold with clean rag to prevent personal injury from oil spray.
(3) Remove four screws (5), lockwashers (6) and hook arm manifold (7) from hook arm cylinder (8). Discard
(4) Remove and discard two o-rings (9) from hook arm manifold (7).