Model 600 Spindle Drive service manual, SM600LS2-AG Page 4
Eskridge, Inc. Olathe, Ks. 913-782-1238 www.eskridgeinc.com
Unit Teardown
1) Scribe a diagonal line across the outside of the unit from the
cover (2) to the base (1) before disassembly to aid in the proper
positioning of pieces during reassembly.
2) Remove drain plugs (42) and drain oil from unit. The oil will
drain out more quickly and completely if warm.
3) Remove the 20 3/4-10 capscrews (43) and
lockwashers (46) retaining the cover (2).
4) Remove the cover (2), thrust washer(s)/bearing(s) (30,31,32),
and input gear (17). Inspect o-ring (33); discard if damaged or
deformed.
5) Lift the planet carrier assembly out of the unit .
6) Remove ring gear(s)/spacer (8/10pri, 7sec) and subsequent
carrier assemblies. Inspect gear to gear and gear to base O-
ring(s) (33); as before, discard if damaged or deformed.
7) The unit is now disassembled into groups of parts.
The area(s) requiring service should be identified by thorough
inspection of the individual components after they have been
cleaned and dried.
Carrier Assembly Teardown
Rotate planet gears (12/13 pri;11 sec) to check for abnormal
noise or roughness in bearings. If further inspection or re-
placement is required, proceed as follows.
1) Primary: Drive roll pins (39) completely into the planet shafts
(19). Secondary: Remove planet shaft retaining rings (36),
spacers (21) and preload shims (20)
2) Slide planet shafts (19 pri/18 sec) out of carrier.
3) Remove planet gears (12/13 pri; 11 sec), washers (22 pri/21
sec) and bearings (29 pri;27/28 sec) from carrier (6).
4) Inspect the planet gear (12/13 pri; 11 sec), bearing bore and
planet shaft (19 pri/18 sec) and bearings (29 pri; 27/28 sec).
Check for spalling, bruising or other damage and replace com-
ponents as necessary.
5) Primary only: Remove roll pins (39) from planet shafts (19) us-
ing a 1/4 inch pin punch.
Carrier Reassembly
1) Primary: Planet shafts (19) should be installed with cham-
fered end of 1/4 inch roll pin hole towards outside diameter of
carrier (6); this will ease alignment of holes while inserting roll
pins (39). Secondary: Planet shafts must be installed aligning
the slot in the large end of the shaft with the roll pin protruding
into the shaft bore.
2) Primary: Drive roll pin (39) into the carrier hole and into planet
shaft to retain parts. Secondary: Install the first planet washer
(21) to the small end of the planet shaft, the appropriate num-
ber of preload shims (20) and then the second planet washer
(21) and retaining ring (36) Repeat for remaining planet gears.
Base Subassembly Teardown
1) Remove the output shaft lock ring (14) using a heel bar or pull-
er; if using a heel bar, be sure not to pry against the cage of the
inner spindle bearing (25). Remove the split ring segments (35)
and shims (15).
Caution: Since the shaft is no longer positively retained,
care should be taken to avoid injury. Care should also be
taken not to damage it while pressing through base.
2) Place base (1) exterior side down, on a plate or table.
Press output shaft out bottom of base by applying a load
to internal end of spindle (3) until it passes through inner
spindle bearing cone (25).
3) A gear puller may be used to remove the outer bearing
cone (23) from the spindle (3). If reusing old bearing cone,
do not pull on or damage roller cage.
Note: Press bearing cone onto output spindle by pressing
on inner race only. DO NOT press on roller cage, as it may
damage the bearing assembly.
4) Inspect inner and outer bearing cups (26 & 24). If cups are
damaged they must be replaced, drive them out using a
brass drift and utilizing the bearing knock-out notches in
the base (1)
Base Reassembly
1) Clean all foreign material from magnetic oil plugs located
In base (1).
2) Place base exterior side up on work table.
3) Apply a layer of lithium or general purpose bearing grease
to the roller contact surface of outer bearing cup (24).
4) Press outer bearing cone (23) onto the spindle (3) until it
seats against the shoulder.
5) Wipe the face of each half of the metal face seal (49) using
a lint-free wipe. No particles of any kind are permissible on
the sealing surfaces. (Even a hair is sufficient to hold the
seal surfaces apart and cause a leak.) Apply a thin film
of oil on the entire seal face of one or both seals using a
clean finger or lint-free applicator. Oil must not contact any
surfaces other than the sealing faces. (See Pages 6-8 for
seal inspection and service procedures.)
6) Place the spindle (3) with the outer bearing cone into the
base.
7) Flip shaft/base assembly, and apply lithium or
general purpose bearing grease to roller con-
tact surface of the inner cup (26), then press
inner bearing cone (25) onto shaft until it seats against
inner bearing cup.
8) Proper spindle bearing preload will result in
a rolling torque which varies between 200
to 300 in-lb. The bearing preload should be
tailored to your application; a low-speed application may
require a high pre-load, while high-speed applications
usually benefit from low pre-load. Adding shims (15) will
increase the pre-load on the bearing set. Determine your
pre-load requirement and install shims to obtain this pre-
load.
9) Install the Load-N-Lock™ halves (35) over the shims and
into the corresponding spindle groove. Then, install the
lock ring (14) over the Load-n-Lock halves (35B).
All subassembly service or repairs should be com-
plete at this time. Continue to Unit Assembly to com-
