Primary Planet Carrier Service - BRADEN CH400B Installation Maintenance And Service Manual

PRIMARY PLANET CARRIER SERVICE

DISASSEMBLY
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11
ITEM NO. DESCRIPTION
6 PLANET PIN
8 THRUST WASHER
9 BEARING ROLLER
10 PLANET GEAR
11 RETAINING RING
71 PLANET CARRIER
1. Remove the retaining ring (11) from one of the planet
carrier gears.
Observe safety procedures when operating a hydraulic
press. Failure to follow safety procedures can result in
personal injury or death.
CAUTION
If the planet carrier is not properly supported or exces-
sive force is applied to the planet pin, damage to the
planet carrier can occur.
2. Use a press to drive the planet pin (6) knurl past the
carrier. Place a tray or bucket under the press to catch
any loose bearing rollers (10) that drop. If the planet
pin (6) is supported after it clears the knurl surface, the
bearing rollers will remain in place. Hold both thrust
washers (8) against the gear (10) while sliding the
planet pin (6) out of the gear then pull the gear from the
carrier keeping the thrust washers against the gear.
3. Repeat the above steps for the remaining two planet
gears.
4. Thoroughly clean all parts and inspect for damage and
wear. The bearing rollers should exhibit no irregulari-
ties. If the rollers show any sign of spalling, corrosion,
discoloration, material displacement or abnormal wear,
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8
10
9
8
QTY
3
6
45
3
3
1
the bearing rollers should be replaced. The thrust
washer contact areas should be free from any surface
irregularities that may cause abrasion or friction. The
planet gears (10) and planet pins (6) should be inspect-
ed for abnormal wear or pitting.
ASSEMBLY
The loose roller bearings can be difficult to keep in place
during assembly. This procedure attempts to simplify
this.
1. Clean and inspect parts as described in step 4 of the
disassembly procedure.
2. Place planet gear (10) on clean workbench resting on
the gear teeth. Coat bearing rollers (9) with grease
and place in lower half of gear. Coat one thrust washer
(8) with grease and place in position on planet gear.
Slide planet pin (6) into planet gear and center. Grease
remaining bearing rollers (9) and slide between planet
gear (10) and planet pin (6). After all bearing rollers are
in gear, grease remaining thrust washer (8) and slide
over planet pin into position on gear to hold roller bear-
ings in place.
3. Place planet carrier (71) on work bench with planet pin
retaining ring groove facing up.
4. Hold planet pin in position with the thrust washers (8)
against gear and lift gear so the planet pin is vertical.
While holding washers in place, slide planet pin out of
gear. Slide planet gear with washers into planet carrier
(71) and align with the carrier opening. Slide planet
pin, knurled end first, through planet carrier and gear
until knurl seats against opposite side of the planet car-
rier.
5. Place planet carrier in hydraulic press and provide sup-
port around planet pin hole. Slowly press the knurled
surface of the planet pin into carrier until retaining ring
groove is visible. Install retaining ring (11).
Observe safety procedures when operating a hydraulic
press. Failure to follow safety procedures can result in
personal injury or death.
CAUTION
If the planet carrier is not properly supported or exces-
sive force is applied to the planet pin, damage to the
planet carrier can occur.
6. Repeat procedure for remaining two planet gears.
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