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TM5-4210-229-14&P
Section III. MAINTENANCE OF AUXILIARY EQUIPMENT
Para
. Para
General ....................................................................... 5-5
Rescue Saw Repair .....................................................5-7
Hydraulic Rescue Tool Power Unit Repair ................... 5-6
5-5. GENERAL.
This section contains information on the maintenance of the auxiliary equipment that is maintainable at the
Direct Support level.
5-6. HYDRAULIC RESCUE TOOL POWER UNIT REPAIR.
This task covers:
a.
Disassembly
b.
Adjustment
c.
Reassembly
INITIAL SET-UP
Tools
Materials/Parts
General Mechanics Tool Kit
Hydraulic Fluid (Appendix D, Item 19)
Hydraulic Rescue Tool Power Unit (91708-0015)
Equipment Condition
General Safety Instructions
Para.
Condition Description
Avoid flame or spark.
4-19
Hydraulic Rescue Tool Removed
DISASSEMBLY
Drain gasoline from power unit prior to disassembly to
avoid fire hazard.
Drain hydraulic fluid into a clean container prior to
disassembly to avoid contamination
which may damage the hydraulic
pump.
a.
Hydraulic Rescue Tool Power Unit Disassembly
(1)
Remove ten screws (1) and lockwashers
(2).
(2)
Lift power unit (3) from reservoir (4).
(3)
Lay the power unit on its side.
(4)
Unscrew the relief valve subassembly (5)
and gasket (6).
(5)
Remove relief valve fitting (7), spring (8)
and ball (9).
(6)
Remove two locknuts (10) on the inside of
the reservoir (4).
(7)
Remove liquid level gauge (11).
8.
Remove the three engine bolts (12) and
lockwashers (13).
9.
Lift engine (14) from cover plate assembly
(15) using care not to lose engine key (16.
ADJUSTMENT
a.
Adjustment of Sequencing Valve.
(1)
Using a 3/16 inch allen wrench, screw the
lockscrew (17) all the way in until snug.
(2)
Back off lockscrew (17) approximately 1/2
to 3/4 of one turn.
5-8
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