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TM 5-2420-222-34
14-12.
ACKHOE BOOM AND SWING VALVES REPAIR (Con’t).
12.
Coat new preformed packing (20) with hydraulic fluid and install in place on clevis rod end (5).
NOTE
Ensure that sealing surfaces are clean before applying thread sealing compound to
clevis rod end.
13.
Apply thread sealing compound to threads of clevis rod end (5).
14.
Install clevis rod end (5) and assembled parts on valve (4).
NOTE
Step 15 applies only to boom valve.
15.
Coat fluid flow restrictor (1) with hydraulic fluid and install in valve body (2).
16.
Coat two new preformed packings (10 and 11) and sleeve bushing (12) with hydraulic fluid. Install sleeve bushing
and preformed packings in valve body (2).
17.
Coat valve (4) with hydraulic fluid and slide into valve body (2).
18.
Install spring pin (14) and two washers (13) in valve body (2).
19.
Coat spool spring (15) with hydraulic fluid and install in valve body (2).
20.
Hold clevis rod end (5) to prevent turning. Install bolt (16) in spool plug (3). Torque bolt to 5-8 lb.-ft. (7-11 N•m).
21.
Place valve body (2) in vise with caps. Install valve cap (17) in valve body. Remove valve body from vise.
22.
Install washer (6), bellows (7), and protective dust cap (8) over clevis rod end (5) and secure with two capscrews
(9).
FOLLOW-ON TASKS:
•
Assemble backhoe control valve assembly (see paragraph 14-9).
TA701595
14-65
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