Reassembly-continued

e. After the assembled input shaft and bearings

k. Place the gasket (8) on the gear housing

are pressed into the eccentric housing (31), secure

flange. Position the gear housing cover with

them in place with the retaining ring (26). Press the

assembled parts over the gear housing so that the

seal (30 ) into the seal seat on the eccentric housing,

ends of the shafts engage their respective bearings.

taking care to prevent the shaft keyway from

Use a plastic mallet to drive the gear housing cover

cutting the inner lip,

into place.

l. Secure the gear housing cover to the gear

Note: Do not install the assembled input shaft and ec-

housing with cap screws (3 and 4), shoulder bolts

centric housing on the gear housing cover until the gear

(2 and 5), nuts (6), and lock washers (7). Install

housing cover is installed on the gear housing.

the shoulder bolts (2 and 5 ) first and tighten them

f. If the gearshaft (18) was removed from the

evenly and alternately until they are snug, making

internal gear (17 ), press the gear onto the shaft

sure the shafts and the internal gears rotate freely

until the hub on the inside of the gear is snug

without gear lash. Install the cap screws (3 and 4),

against the pinion teeth of the shaft.

lock washers (7), and nuts (6) and tighten them

g. Press the roller bearing, (21) and the sleeve

evenly and alternately. After all hardware is

bearing (20) in the gear housing (22) so that the

tightened, check again to assure that the shafts

shoulder of the sleeve bearing is seated tightly

rotate freely.

against the housing.

m. Position the assembled input shaft (29),

h. Press the ball bearing (15) onto the

eccentric housing (31 ), and gasket (25) on the gear

crankshaft (13 ); secure with a retaining ring (12).

housing cover. The thicker part of the eccentric

Press the assembled bearing and crankshaft into

housing marked TOP must be up when the pump

position in the bore of the gear housing. Use the

gear case is in the upright position. This will

retaining ring ( 14) to position the parts in the

provide proper engagement between the pinion of

housing.

the input shaft and the internal gear. Secure the

i. Install the key (11) in the keyway of the

eccentric housing with cap screws (23 ) and lock

crankshaft and press the spur gear (10 ) onto the

washers (24). Tighten the, cap screws evenly and

crankshaft Until it is seated against the shaft

alternately to prevent distorting the housing.

shoulder.

n. Position the expansion plugs (19 and 32) in

j. Position the gear housing on the bench with

their respective bores with the convex side outward.

the flange facing upward. Position the assembled

Strike the convex side sharply with a hammer to

internal gear (17 ) and gearshaft ( 18) in place on

expand each plug into place.

the gear housing. Install the washers ( 9 and 16) on

o. Install the gear case on the pump (para 5-9).

the ends of their respective shafts.

6-4