Model 1400 Shaft Drive service manual, SM1400KD3-AA Page 5
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 top
cover
(53)
to the adapter cover
(3)
, and to the base
(1)
before
disassembly to aid in the proper positioning of pieces during
reassembly.
2)
Remove drain plugs
(30A)
and drain oil from unit. The oil will
drain out more quickly and completely if warm.
3)
Remove the twenty 5/8-11 capscrews
(75B)
securing the top
cover
(53)
to the unit.
4)
Remove the top cover
(53)
, input thrust washer(s) ,
bearing(s)
(64A, 64B)
, and Stage I input gear
(54)
.
Inspect cover o-ring
(66)
; discard if damaged or
deformed.
5)
Lift the stage I planet carrier assembly
(55)
including shaft
adapter
(52)
from the unit .
6)
Remove Stage I ring gear
(62)
, inspect o-ring
(66)
and replace
if damaged or deformed.
7)
Remove the twenty 3/4-10 capscrews
(25C)
and
lockwashers
(25D)
securing the ring adapter cover
(3)
.
8)
Remove the ring adapter cover
(3)
, thrust race
(14C)
,
Stage II sun gear
(54)
and thrust washers
(14A, 14B)
from
unit. Inspect cover o-ring
(16C)
; discard if damaged or
deformed
9)
Lift the stage II planet carrier assembly
(7)
from the unit .
10) Remove the Stage III sun gear
(6)
.
11) Remove the three 3/8-24 flat head capscrews
(25A)
securing
the carrier retaining plate
(5L)
to the output shaft
(2)
.
12) Remove remaining ring gears
(12B, 12A)
and Stage III car-
rier assembly
(5)
. Inspect gear to gear and gear to base O-
ring(s)
(16C)
, discard and replace any damaged or deformed
O-rings.
13) The unit is now disassembled into groups of parts.
The area(s) requiring repair should be identified by thorough
inspection of the individual components after they have been
cleaned and dried.
Carrier Assembly Teardown
Rotate planet gears (55B Stg I,7B Stg II, 5B, Stg III) to check for
abnormal noise or roughness in bearings. If further inspection
or replacement is required, proceed as follows.
1)
Drive roll pins
(55G Stg I, 7C Stg II)
completely into the planet
shafts or remove planet shaft retaining rings
(5F Stg III)
2)
Slide planet shafts
(55C Stg I, 7C Stg II, 5C Stg III
) out of car-
rier
(55A Stg I, 7A Stg II, 5A Stg III)
.
3)
Remove planet gears, washers
(55D Stg I, 7D Stg II)
and bear-
ings
(55E Stg I, 7F Stg II, 5D & 5E Stg III)
from carrier.
4)
Inspect the planet gear
,
bearing bore and planet shaft
(55C Stg
I, 7C Stg II, 5C Stg III)
and bearings. Check for spalling, bruis-
ing or other damage and replace components as necessary.
Note: When using loose (uncaged) roller bearings, all rollers in
the corresponding planet gear should be replaced if any in the
set are found to be defective
5)
Remove roll pins
(55C Stg I, 7C Stg II)
from planet shafts
(55C
Stg I, 7C Stg II)
using a 3/16” (Stg I) or 1/4” (Stg II, Stg III)
pin punch.
Carrier Reassembly
1)
Loose roller installation; if using bearing assemblies, re-
place bearings as needed and proceed to step 2:
a) Set planet washer
(55D Stg I, 7D Stg II)
on work
table with planet gear
(55B Stg I, 7B Stg II)
on top of
it. Center planet washer to planet gear as closely as
possible.
b) Center planet shaft
(55C Stg I, 7C Stg II)
in planet
gear bearing bore.
c)
If used, place spacer washer
(55E Stg I, 7E Stg II)
onto planet shaft (refer to exploded view to confirm
spacer positions).
d) Begin placing rollers
(55F Stg I, 7F Stg II)
around
shaft
(5C Stg I, 7C Stg II)
. There should be clearance
for last roller to slide in. Be sure to install sixteen (Stg
I) or twenty (Stg II) rollers in each bearing row.
(If using multiple rows of rollers, repeat steps C and
D as necessary. Once complete, refer to exploded
view to confirm that any spacer washers
(55E Stg I,
7E Stg II)
are appropriately positioned.)
e) Place a washer
(55D Stg I, 7D Stg II)
over gear and
onto shaft.
f)
Carefully slide assembly off of table, holding planet
washers against planet gear.
g) Slide planet shaft out of the assembly and slip as-
sembly into carrier.
h) Align planet gear & bearing assembly inside
carrier and install planet shaft through entire
assembly.
2)
Planet shafts
(55C Stg I, 7C Stg II, 5C Stg III)
should
be installed with chamfered end of roll pin hole (Stg
I, II) or slot (Stg III) towards outside diameter of
carrier.
3)
Drive roll pin into the carrier hole (Stg I & II) and into planet
shaft or replace planet shaft retaining rings (Stg III) to re-
tain parts. Repeat for remaining planet gears.
Base Subassembly Teardown
1)
Remove the seal carrier retaining screws
(25B)
and seal
carrier
(13)
from unit. Inspect seal
(16A)
for signs of wear
or damage and replace as necessary.
2) Remove the output shaft lock ring
(35C)
using a heel bar
or puller; if using a heel bar, be sure not to pry against the
cage of the inner output shaft bearing
(20C)
. Remove the
split ring segments
(35B)
and shims
(35A)
.
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.
3)
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 shaft until it passes through inner shaft
bearing cone
(20C)
.
