HYDRAULIC IMPACTOR VALVE LINKAGE STICKS OR BINDS

TM 5-2420-222-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

7. JAW CONTROL (DIRECT LINEAR) VALVE LINKAGE STICKS OR BINDS - CONTINUED

a. If jaw control (direct linear) valve linkage is not sticking or binding, replace jaw control valve

(Serial Numbers 235786 thru 235999 only, page 2-1242), or jaw direct linear valve (Serial

Numbers 319995 thru 342573 only, page 2-1294).

b. If jaw control (direct linear) valve linkage is sticking or binding, replace defective parts as needed

(page 2-1294).

8. HYDRAULIC IMPACTOR VALVE LINKAGE STICKS OR BINDS

Check hydraulic impactor valve pedal rod (1) and link(2) for bends, breaks, or signs of binding.

a. If hydraulic impactor valve pedal rod (1) or link (2) is not bent, broken, or binding, replace

defective hydraulic impactor valve (page 2-1228).

b. If hydraulic impactor valve pedal rod (1) or link (2) is bent, broken, or binding, replace defective

parts as outlined in hydraulic impactor valve (page 2-1228).

9. ONE LOADER BOOM CYLINDER DOES NOT WORK

Check loader check valve-to-loader boom cylinder oil lines (3 and 4) or (5 and 6) for sharp bends, dents, or

kinks.

a. If loader control valve-to-loader boom cylinder oil lines (3 and 4) or (5 and 6) are not bent,

dented, or kinked, replace loader boom cylinder (page 2-1770).

b. If loader control valve-to-loader boom cylinder head end oil line (3 or 5) has a sharp bend, dent or

kink, replace (page 2-1679).

c. If loader control valve-to-loader boom cylinder rod end oil line (4 or 6) has a sharp bend, dent, or

kink, replace (page 2-1688).

10. BOTH LOADER BOOM CYLINDERS DO NOT WORK,A

Check operations of loader bucket (TM 5-2420-222-20).

a. If loader bucket operates properly, replace loader control valve (page 2-1285).

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