Gearcase (pump side) Disassembly and Assembly

D. Remove cap screw (MM) with lock washer and

G. Replace rubber diaphragm. Ref. Par. 18.

special washer (NN) from engine shaft (00).

Lower pump top down. Secure pump top to

Pinion (PP) is grooved for removal with a puller.

frame with the four nuts and bolts.

Remove pinion. Remove woodruff key (RR)

from shaft (00).

22. Gearcase (pump side) Disassembly and Assembly -

E. Remove three cap screws (SS) and internal flat

(Ref. Fig. 6 and 7)

head cap screws (TT) from housing. Pull

The entire power unit and gear train should be removed

housing (LL) with gasket (UU) from engine

from the pump frame for bench work.

housing.

A. Drain oil from the reduction gearcase.

F. Clean and inspect all parts. All gaskets should

B. Disconnect connecting rod. Refer to Par. 21.

be replaced with new ones.

C. Ref. Fig. 6. Remove the two 1/2" bolts, lock

G. Assembly is in reverse of above procedure.

washers and nuts (B) holding gearcase to the

Refer to lubrication chart for filling reduction

gearcase support. Ref. Fig. 7. Remove two

case.

bolts with lock washers and nuts (D), Fig. 7,

holding engine to frame. Save shims (C) Fig. 6,

and shims (E) Fig. 7 for reuse.

D. Lift reduction case and engine off frame for

bench

work.

E. Twelve 5/6" cap screws (F) holding the cover

halves together. Remove these bolts and pull

reduction case assembly (H) from intermediate

section (J). Gasket (G) should be replaced new

in reassembly.

F. Pry out snap ring (K) and pull spur gear (L) off

pinion shaft (U). The 1/4" straight key may be

saved for reuse if not damaged.

G. Remove three 5/16 " socket head cap screws with

lock washers (M) and retainer (N).

H. Straighten ear of lock washer (P). Remove lock

nut (O) and washer (P). Pull output shaft crank

arm (Q) from housing (A). Retain gear (R) from

falling. Remove key (S) and manipulate gear

(R) from housing. Remove spacer (T).

I. Pull pinion shaft (U) with bearings (V) and (W)

from housing. Bearings (V) and (W) may be

removed from pinion shaft.

J. Remove the two round head screws and oil trap

(X), and snap ring (Y).

K. Bearing (Z) may be pulled from bore of housing.

Pull out spacer (AA) and pull out bearing (B3B)

from housing, and inner snap ring (Y).

L. Assembly is in reverse of the above procedure.

23. Gearcase (engine side) Disassembly and Assembly

(Ref. Fig. 6)

A. Remove the V44" socket set screw and oil

slinger (EE). Note position of oil slinger for

reassembly to prevent demage to oil slinger.

B. Remove five '/" cap screws with lock washers

(DD).

Housing (j), bearing retainer (FF),

gaskets (GO), bearings (HH) and (JJ) with

pinion shaft (KK) may now be pulled from

housing (LL).

C. Pull bearings (HH) and (JJ) off pinion shaft

(KK).