Remove Vibrator Motor
1. Thoroughly clean around the hydraulic hoses and motor ports (1) and mark the hoses for identification during reassembly.
2. Disconnect the hoses from the motor (2) and cap or plug all openings.
3. Loosen the setscrews (3) in the motor end of the coupling (4).
4. Support the motor, remove the mounting bolts (5), then pull the motor straight back until the motor shaft is clear of the coupling.
Disassemble Vibrator Motor
Start By:
a. remove the vibrator motor.
1. Remove the 4 screws (1) which hold the mounting flange (2).
2. Remove the mounting flange.
3. Normally the face seal seat does not have to be removed from the mounting flange.
If the face seal assembly (3), (4) is to be removed, drive out the seat (4) evenly with a soft aluminum or brass punch.
4. Remove the exposed retaining ring (5).
NOTE: Use wood slats to protect the aluminum housing when clamping.
5. Hold the motor (across port flanges) in a locking fixture such as a vise.
6. Remove the 4 body screws (6).
7. Using a rubber or plastic mallet, separate the body (7) and the cover (8) by holding the cover and tapping gently at the port flanges.
NOTE: Gerotor gear is a matched inner and outer gear set.
8. Remove the gerotor gear element (9), (10) and shaft (11).
9. Remove the 2 retaining rings (12) from the shaft, then remove the inner gear (10) and drive pin (13) from the shaft.
NOTE: Do not remove bearings (14), (15) from the housing unless there is absolute evidence of damage. (The needle rollers should be free to rotate and not show signs of surface breakdown.)
Assemble Vibrator Motor
1. If the bearings were removed:
a. Press a new bearing (14) into the body (7) to a depth of 1.5 - 2 mm (.058 - .078 inch).
b. Press a new bearing (15) into the cover (8) to a depth of 1.5 - 2 mm (.058 - .078 inch).
| NOTICE |
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This depth must be maintained to provide clearance for the snap rings on the shaft. The depth is measured from the edge of the body and the cover counterbore to the bearing race. |
2. If the dowel pins (16) were removed, insert the dowel pins into the cover.
3. Assemble the drive pin (13) and inner gear (10) onto the shaft (11).
4. Install the retaining rings (12) on each side of the inner gear assembly.
5. Slip the outer gear (9) into the gear pocket in the motor body.
6. Install the shaft assembly into the gear pocket.
7. Insert the O-ring seal (17) into the groove in motor cover.
NOTE: Use wood slats to protect aluminum housing when clamping.
8. Hold the motor in a locking fixture.
9. Install the 4 body screws (6) and tighten the screws to 28.5 - 32.5 Nm (21-24 lb ft).
| NOTICE |
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After the screws are tightened to the correct torque, the motor shaft must rotate freely. |
10. Install the outer retaining ring (5) on the shaft.
11. Slip the spring (18) over the end of the shaft until it contacts the retaining ring (5).
12. Slip the washer (19) over the end of the shaft until it contacts the spring (18).
13. Assemble the seal (20) to the cup seal (21) and install, with the lip out, to the shaft.
14. Install the O-ring (22) into the seal seat (4).
15. Lubricate and install the seal seat into the mounting flange counterbore with the lip of the seal out.
16. Install the O-ring seal (23) into the groove on the mounting face.
17. Install the mounting flange assembly.
18. Install the 4 mounting flange screws (1) and tighten the screws to 5.2 - 6.1 Nm (46 - 54 lb in).
19. Fill port "A" with clean hydraulic oil and rotate shaft clockwise until hydraulic oil drains from port "B".
End By:
a. install the vibrator motor.
Install Vibrator Motor
1. Move the motor (2) into position near the coupling, then insert the motor shaft into the coupling (4).
2. Install the mounting bolts (5).
3. Tighten the coupling setscrew (3).
4. Thoroughly clean around the hydraulic hose ends and motor ports (1), then connect the hoses to the motor.
Remove Drive Shaft
1. Loosen the setscrews (1) in the drive shaft end yokes (2).
2. Loosen the drive shaft dust cap (3) and collapse the drive shaft inward until the end yokes are free of the vibrator shafts. Be careful not to lose the keys.
3. Move the drive shaft to a place where it can be worked on.
Disassemble Drive Shaft
Start By:
a. remove the drive shaft.
1. Make sure arrow marks (1) are stamped on the shaft and sleeve yoke before removing the slip joint. If arrow marks are not readily seen, mark both members so that when reassembled they will be in exactly the same relative position, since the sleeve yoke lugs must be in the same plane as the stub ball yokes to prevent excessive vibration in operation.
2. Unscrew the dust cap (2) from the sleeve yoke (3) and slide the joint off the drive shaft.
3. Bend down the locking lugs (1) with a screwdriver and remove the cap screws (2).
4. Remove the needle bearings and retaining cap sub-assemblies by using a large pair of channel lock pliers on retaining cap edges. Turn retaining cap and bearing sub-assembly, while at the same time lifting upward to remove the sub-assembly from the journal trunnion diameter and out of the yoke hole. Turn the joint over and tap the exposed end of the journal cross until the opposite needle bearing is free. Use a soft round drift (3) with flat face, about .79 mm (.03 inch) less in diameter than the hole in the yoke, otherwise there is danger of damaging the bearing.
5. Remove the journal cross (4) by sliding it to one side of the yoke and tilting it over the top of the yoke lug.
6. Use a suitable cleaning fluid to clean all parts. Allow the parts to remain in the cleaner for some time to loosen up any particles of grease or foreign matter. Remove any burrs or rough spots from any machined surfaces.
7. Do not disassemble needle bearings. Clean with short stiff brush and blow out with compressed air. Work a small quantity of lubricant (SAE 140 oil) into each bearing cap and turn the needle bearing on the trunnion to check wear. Replace if worn.
8. Because worn needle bearings used with a new journal cross or new needle bearings used with a worn journal cross will wear more rapidly making another replacement necessary in a short time, always replace the journal cross and four needle bearing caps as a unit. To facilitate the replacement of journals and bearings, a Journal and Bearing Kit is available. The use of the Kit insures having the correct individual parts when required, and saves valuable time.
Assemble Drive Shaft
| NOTICE |
|---|
Do not use a new cross with old bearings, or an old cross with new bearings. Inspect carefully and if either cross or bearings are worn, replace both. Use the type of cross with a grease fitting if possible. |
1. If unnecessary to install a new kit, make sure that four new seals are installed in the journal retainers.
2. Journal Cross (1)- With the relief valve facing the flange yoke, insert one trunnion of the journal cross into the bearing hole in the yoke lug from the inside between the lugs and tilt until the trunnion of the journal cross will clear the hole in the opposite yoke lug.
3. Needle Bearing And Retaining Cap Sub-assembly (2) - Insert from outside of yoke. Press into place with an arbor press or tap with a soft round drift taking care not to mar any surfaces.
4. Lock Strap And Cap Screws (3) - Assemble and bend the lugs of the lock strap up against the flat of the cap screw. If the joint appears to bind, tap the lugs lightly to relieve any pressure of the bearing on the end of the journal.
5. Lubricate the splines thoroughly and assemble the shaft. BE SURE that the arrow or marks (1) on the shaft and slip joint are in line, since the sleeve yoke lugs must be in the same plane as the stub ball yoke lugs to prevent excessive vibration.
6. The cork washer should be replaced if necessary before assembling with the dust cap (2) and steel washer on the sleeve yoke (3).
End By:
a. install drive shaft.
Install Drive Shaft
Before actual installation, the short coupled joint should be checked for the following items:
1. No damage or dents on drive shaft tubing which could cause unbalance. If the dents are severe enough they can weaken the tube and a failure might occur under torque load.
2. Splines in the slip joint should slide freely with slight drag from spline seal.
3. Bearings should flex and be free from excessive bind. A slight drag is the most desirable condition on a new universal joint. This drag is from the bearing seals. When rotating, yoke lug deflections cause some additional clearance. Excessive looseness is not desirable due to the resulting unbalance.
4. The end yokes should be free from burrs, paint and foreign substances which would not allow proper seating at assembly.
5. Position a key (1) on a vibrator shaft (2) and insert one of the end yokes (3) onto the shaft.
6. Loosen the drive shaft dust cap (4), collapse the drive shaft as needed to align the other end yoke with the other vibrator shaft.
7. Position the key on the other vibrator shaft.
8. Slide the drive shaft outward until the end yoke is inserted onto the vibrator shaft, then tighten the dust cap.
9. Tighten the setscrews in the drive shaft end yokes.
Remove and Install Vibrator Shaft Bearing (Outboard End)
1. Loosen the setscrew (1) in the vibrator shaft end of the coupling (2).
2. Unbolt the motor mount (3) and bearing (4) from the screed frame (5).
3. Slide the mount and attached motor and coupling away from the bearing.
4. Loosen the bearing collar setscrews (6) and slide the bearing (4) off the vibrator shaft (7).
5. Slide the new bearing onto the vibrator shaft.
6. Move the motor, motor mount, and coupling into position near the vibrator shaft and slide the coupling onto the shaft.
7. Bolt the motor mount and bearing to the screed frame.
8. Tighten the setscrews in the coupling and the bearing collar.
Remove and Install Vibrator Shaft Bearing (Inboard End)
Start By:
a. remove the drive shaft.
1. Loosen the setscrews (1) in the bearing collar.
2. Unbolt the bearing (2) from the screed frame (3).
3. Slide the bearing off the vibrator shaft (4).
4. Slide the new bearing onto the vibrator shaft.
5. Bolt the bearing to the screed frame.
6. Tighten the setscrews in the bearing collar.
End By:
a. install the drive shaft.
Remove and Install Vibrator Shaft (Main Screed)
Start By:
a. remove the drive shaft.
1. Loosen the setscrews (1) in the vibrator shaft end of the coupling (2) and in both bearings (3), (4).
2. Unbolt and remove the inboard bearing (3).
3. Slide the vibrator shaft (5) inboard until it is free of the coupling (2) and outboard bearing (4).
4. Slide the replacement vibrator shaft into position in the outboard bearing and the coupling.
5. Slide the inboard bearing onto the vibrator shaft and install the bearing mounting bolts.
6. Tighten the setscrews in the coupling and in both bearings.
End By:
a. install the drive shaft.
Remove and Install Vibrator Shaft (Screed Extension)
1. Loosen the setscrews (1) in the vibrator shaft end of the coupling (2) and in both bearings (3), (4).
2. Unbolt and remove the right bearing (3).
3. Slide the vibrator shaft (5) toward the right until it is free of the coupling and left bearing (4).
4. Slide the replacement vibrator shaft into position through the left bearing and the coupling.
5. Slide the right bearing onto the vibrator shaft and install the bearing mounting bolts.
6. Tighten the setscrews in the coupling and in both bearings.