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TM5-2420-222-34
12-1.
FRAME ASSEMBLY FRONT SUPPORT MAINTENANCE (Con’t).
NOTE
Loader backhoes have two different types of hydraulic pump drive shaft
connections. Perform steps 28 through 33 for loader backhoes with serial numbers
319995-342573. Perform steps 34 through 36 for loader backhoes with serial
numbers 235786-235999.
28.
Position coupling front half (23) and cushion (24) in place against rear coupling half with teeth of cushion and rear
coupling half engaged.
29.
Using pinch bar, slide hydraulic pump drive shaft (17) on hydraulic pump shaft (22) until it is against front coupling
half (23) with screw holes alined.
30.
Install and tighten two screws (20) in hydraulic pump drive shaft (17) and coupling front half (23). Torque screws
to 32-38 lb.-ft. (43-52 N•m).
CAUTION
Do not overtighten C-clamp holding coupling halves together or parts may be
misalined causing vibration damage.
31.
Using 4 in. C-clamp, clamp coupling front half (23) and rear coupling half to crankshaft pulley just tight enough to
keep them in place.
32.
Apply sealing compound to four screws (21). Install screws in hydraulic pump drive shaft (17). Torque screws to
32-38 lb.-ft. (43-52 N•m).
33.
Remove C-clamp from crankshaft pulley, coupling front half (23), and rear coupling half.
12-22
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