Bush Hog 865H Operator's Manual download pdf (Page 26)

Z. Plumb hydraulic cylinders as shown in diagrams

on pages 28 and 29. Plugs are supplied to adapt

valve for either an open or closed center tractor

hydraulic system. Consult your tractor dealer to

determine which type system your tractor has.

IMPORTANT

FAILURE TO MATCH VALVE TO TRACTOR

HYDRAULIC SYSTEM BY USING INCOR-

RECT PLUG WILL CAUSE DAMAGE TO

TRACTOR.

IMPORTANT

FAILURE TO RETIGHTEN NUTS TO ORIGI-

NAL POSITION MAY CAUSE DAMAGE TO

IMPLEMENT AND/OR TRACTOR DUE TO

IMPROPER SLIP CLUTCH TORQUE SET-

TING.

EE. Fold wings into the transport position and in-

stall transport lock pins.

W. Place punch in blind hole in collar. Strike punch

sharply with hammer in the direction of shaft rotation

to tighten against inner ring extension. (Figure 5-17)

Tighten setscrew to 20 ft./lbs.

X. Position shield over bearing housing and fasten

with 1/2 x 1-1/4” capscrews and lockwashers.

Y. Slide spacer bushing onto end of jackshaft be-

fore installing driveline. This will insure proper space

will be maintained between the bearing and the driv-

eline yoke.

Figure 5-18 Spring Length

5-2 MODEL 2710 ASSEMBLY (Figure 5-19)

NOTE

Overall machine assembly illustration is located on

pages 16 - 18.

A. Perform steps “A” through “K” in paragraph 5-1.

B. The front end of the weight box has the top two

holes located 2-3/4” from the leading edge. Place the

weight box alongside the center section leaving work-

ing room between the sections.

C. Fasten the hinge weldment plate to the inside

edge of the box using 1/2” x 8” carriage bolts, lock-

washers and locknuts. The bolts should be inserted

from the hinge side of the weight box.

D. Lift weight box using fork lift or chain hoist and

position it in alignment with the center section so that

the hinge tubes on the wight box ingage the hinge

tubes on the center section with the front edge of the

cutter and weight box aligned. Install hinge pin

through the hinges.

NOTE: The hinge pin will install easier if a 1” rod is

temporarily inserted in the last two hinge tubes once

the pin is started in the front hinge.

Install hinge shields between hinges as pin is in-

serted. Be sure to install the hinge pin lock collar after

first set of hinge tubes. Secure hinge pin with lock col-

lar and roll pin.

E. Place pivot tube through lugs on weigtht box.

Spring

Length

“EG” Clutch 1-17/64” (32.2mm)

Figure 5-16

Figure 5-17

Punch

Lock Collar Bearing

CC. With tractor at idle speed, engage tractor

PTO drive 2-3 seconds. Each clutch should slip

without turning blades.

DD. Retighten nuts to within 1/64” of original po-

sition. Initial spring length is 1-17/64” (32mm).

(Figure 5-18)

Figure 5-15

Pillow Block Assembly

of shaft. Slide lock collar up to bearing and turn in the

direction of shaft rotation until it slips over the inner

ring extension. (Figure 5-16) Turn collar quickly in

the direction of shaft rotation (approx. 1/4 turn) to

tighten.

V. Align pillow block bearing housing between lugs

on spacer link and fasten with pin weldment, lock-

washer and nut. (Figure 5-15)

AA. Fill each gearbox with six quarts (5.7L) of

EP80W-90 gearbox oil. Allow time for oil to seep

through bearings into lower housing. Replace

temporary plugs with permanent plugs supplied

in owner’s manual package.

BB. On each clutch, loosen eight nuts retaining

clutch springs 1/3 turn or until spring can be

turned with fingers.

Shield

Bearing

Housing

Spacer

Link

Lock Collar

Spacer Bushing

Mount Weldment

Tongue

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Bush Hog 865H Operator's Manual Page 26

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