|
| |
TM 5-2420-222-34
14-15.
LOADER BOOM AND BUCKET VALVES REPAIR (Con’t).
3.
Install plug (1), new backup washer (30), and two new preformed packings (31 and 33).
NOTE
Perform steps 4 and 5 only if repairing bucket valve.
4.
Install two new preformed packings (31) and new backup washers (30) in valve body (32).
5.
Install bucket valve relief valves (see paragraph 14-16).
6.
Coat new preformed packing (9), spring (8), and detent plunger (7) with hydraulic fluid. Install detent plunger,
spring, preformed packing, and plug (10) in valve body (32).
7.
Coat new preformed packing (13) with hydraulic fluid, then install in place on spool plug (14).
NOTE
Ensure that sealing surfaces are clean before applying thread sealing compound to
spool plug.
8.
Apply thread sealing compound to threads of spool plug (14).
9.
Wrap valve (12) with a clean rag and place in vise with caps. Install spool plug (14) and preformed packing (13)
10.
Coat fluid flow restrictor (11) and spring (25) with hydraulic fluid and install in place on valve (12).
11.
Coat new preformed packing (24) with hydraulic fluid and install in place on clevis rod end (23).
NOTE
Ensure that sealing surfaces are clean before applying thread sealing compound to
clevis rod end.
12.
Apply thread sealing compound to threads of clevis rod end (23). Install clevis rod end and assembled parts on
valve (12). Remove valve from vise.
13.
Coat new preformed packing (21) and sleeve bushing (22) with hydraulic fluid. Install sleeve bushing and
preformed packing in valve body (32).
14.
Coat valve (12) and assembled parts with hydraulic fluid and slide into valve body (32).
NOTE
Perform step 15 only if repairing boom valve. Perform step 16 only if repairing
bucket valve.
15.
Install sleeve spacer (18), spring (16), and washer (15) in valve body (32).
16.
Install sleeve spacers (17 and 18), spring (16), and washer (15) in valve body (32).
17.
Hold clevis rod end (23) to prevent turning. Install spool spring screw (19) in spool plug (14). Torque spool spring
screw to 5-8 lb.-ft. (7-11 N•m).
18.
Place valve body (32) in vise with caps. Install valve cap (20) in valve body. Remove valve body from vise.
19.
Install new preformed packing (6), washer (5), bellows (2), and protective dust cap (4) over clevis rod end (23) and
secure with two screws (3).
14-78
|
