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TM 5-2420-222-34
14-13.
BACKHOE RELIEF VALVES MAINTENANCE (Con’t).
7.
Place relief valve (1) in vise with caps. Install bushing (6) and assembled parts in relief valve.
8.
Push down on valve seat (10) and compress spring (11). Tighten bushing (6) and assembled parts.
9.
Coat valve retainer and ball (4) with hydraulic fluid. Install valve retainer and ball in relief valve (1).
10.
Using retaining ring pliers, install retaining ring (5) in relief valve (1). Remove relief valve from vise.
f.
INSTALLATION
NOTE
Relief valves are installed the same way. Swing valve relief valve is shown. Repeat
steps 1 and 2 as required for each relief valve.
1.
Coat new preformed packing (2) with hydraulic fluid. Install preformed packing on relief valve (1).
2.
Install relief valve (1) and preformed packing in valve body (3).
TA701598
14-69
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