Usage:
Idler Shaft
Removal and Installation
1. Remove the upper housing, upper shaft group, planetary reduction gears and ring gear. See the covering topics.
2. Remove the bolts (2) and locks from the front end of the idler gear shaft (1)
PREPARING TO REMOVE IDLER GEAR AND IDLER GEAR SHAFT
1-Idler gear shaft. 2-Bolt (six).
PREPARING TO REMOVE IDLER GEAR AND IDLER GEAR SHAFT
1-Idler gear shaft. 3-Idler gear.
3. Attach a sling and hoist to the idler gear (3) to prevent the gear from falling when the shaft (1) is pushed out.
4. Using a 1H3107 Push Puller with two 939A Legs and the 7F9540 Hydraulic Puller with the 6F25 Pump Group, push the idler gear shaft from the idler gear and housing as shown.
| NOTICE |
|---|
When the shaft is pressed out of the housing, it will fall into the lower housing unless it is supported. |
PUSHING OUT IDLER SHAFT
| NOTICE |
|---|
When removing the idler gear, hold the bearings in place to prevent them from being damaged on the housing. |
REMOVING IDLER GEAR
5. Inspect the tapered roller bearing in the idler gear and replace if worn or damaged.
6. Lower the idler gear into its proper position with the bearings lined up correctly.
7. Line up the six holes in the shaft with the holes in the housing before the shaft is pulled in.
8. Using a 1H3107 Push Puller bolted directly to the lower housing, a 7F1860 Handle, a 7F1858 Forcing Screw, a 7F1859 Forcing Screw Nut and a 7F9540 Hydraulic Puller with the 6F25 Pump Group, pull the idler shaft through the idler gear and into the rear web of the housing.
Lower Shaft
Removal and Installation
1. Remove the upper shaft group. See the covering topic.
2. Remove the planetary reduction gear. See the covering topic.
1-Sun gear and shaft assembly. 2-Astern driven gear and spacer ring. 3-Baffle. 4-Retainer.
NOTE: When installing the baffle, be sure the two bolt heads in the center of the baffle are facing to the rear. Reversal of these bolts will cause interference with the planet carrier.
3. Remove the plate on the front end of the lower shaft.
4. Install two sets of wedge blocks with a 5H6816 Stud, two 1B4205 Nuts and two 4B4280 Washers between the ahead driven gear and the housing web, one set at the top of the gear and the other at 180° from the first set. See the topic, FABRICATION OF WEDGE BLOCKS.
5. Tighten the wedge blocks until they fit snugly between the gear and housing web. The wedge blocks will "bottom out" the gear against the web omitting the necessity of pulling against the web.
6. Using a 7F9540 Hydraulic Puller, a 6F25 Pump Group, an 8B7548 Puller, 8B7550 (4 1/2") Legs, knurled adapters and a liner puller assembly with a 5F7362 Adapter Plate and without the three-way head, start to pull the shaft from the housing.
PREPARING TO REMOVE LOWER SHAFT
REMOVING LOWER SHAFT
| NOTICE |
|---|
Be sure the key holding the ahead driven gear to the shaft is free while removing the shaft to prevent serious damage to the housing. |
7. After pulling the shaft to the bridge, change to 5F7369 Legs, install a rope hoist through the ahead driven gear and continue pulling the shaft as shown.
8. Inspect the bearings and replace if worn or damage.
NOTE: To install lower shaft, place it in position and pull it up tight with the bolts in the plate at the front end of the shaft.
Fabrication Of Wedge Blocks
1. Cut two blocks of the dimensions indicated from mild steel stock.
2. Drill a hole 7/8" in diameter through the blocks as illustrated.
WEDGE BLOCKS
3. Cut the blocks diagonally as indicated.
WEDGE BLOCKS