Meritor TP-1628 Guía De Instalación Y Ajuste De Embrague página 5

GENERAL INSTALLATION GUIDELINES
1. (14" & 15 ½") Resurface or replace flywheel. Surface must be smooth or premature clutch failure can occur. Flywheel depth must be 2.937" for
14" pot style flywheels. 15 ½" and 14" medium duty clutches use a flat flywheel. REMEMBER: Machining the flywheel past the recommended
.060" moves the pressure plate away from the transmission. In this event, install a fiber spacer (provided) on the pilot shaft between the
clutch brake and the transmission. The release yoke in the bell housing may not align properly with the pressure plate release bearing housing.
Linkage adjustment may be required.
2. (14" & 15 ½") Inspect and dial-indicate the mating surface of engine flywheel housing and clutch bell housing for alignment and also check
flywheel run out. CAUTION: If misalignment is greater than recommended limits, this may cause poor clutch release, rapid wear on transmission
pilot shaft and destruction of the clutch disc. Excessive flywheel run out may cause severe vibration in vehicle drive line.
3. (14" & 15 ½") A new pilot bearing should be used. Before installing pilot bearing into flywheel, check freedom of movement on transmission
pilot shaft.
4. (14" Pot Flywheel Only) Drive pins in the flywheel should be replaced. Check to ensure drive pin heads are square with the flywheel friction
surface. If drive pins are not replaced, assume they have turned. The constant pounding of the center plate may have changed the position of
the drive pins in the flywheel. Play it safe — check them all!
5. (14" Pot Flywheel Only) After the drive pins are installed and properly aligned, position the center plate onto the drive pins and check the
clearance with a feeler gauge. Clearance should be .006" to .010" and be measured from the same side of the drive pin at each location. The
center plate should move up and down freely on the pins.
6. (14" Pot Flywheel Only) Install front clutch disc, center plate and rear disc as marked.
7. (14" Pot Flywheel Only) Insert alignment shaft through both clutch discs making sure it enters the pilot bearing. NOTE: If an old pilot shaft with
worn splines is used to align clutch disc, transmission pilot shaft may damage clutch hubs during installation of transmission.
8. (14" Pot Flywheel Only) Position cover assembly onto the pilot shaft and guide towards flywheel mounting surface, making sure the cover fits
into the flywheel pilot. Start cap screws.
9. (15 ½" and 14" Medium Duty Only) Insert alignment shaft through bearing housing. Install rear disc, center plate and front disc on alignment
shaft. Move clutch housing towards flywheel making sure cover fits into flywheel pilot. Note: 14" medium duty must install adapter ring on
flywheel first.
10. (14" & 15 ½" Only) Install the cap screws that fasten the clutch housing on the flywheel. Tighten the cap screws to the specified torque and the
sequence specified by the manufacturer of the vehicle or transmission. Cap screws should be Class 5 or greater.
11. (14" & 15 ½") Examine transmission pilot shaft for wear and replace if necessary. Worn splines on pilot shaft will cause clutch to release
improperly and may cause splined hubs in clutch disc to break out.
12. (14" & 15 ½") Inspect release bearing yoke and both cross shaft bushings in bell housing and replace if worn. NOTE: For proper clutch release,
release bearing housing on cover must "squeeze" clutch brake during clutch disengagement. Worn parts in bell housing may prevent full
movement of release bearing during operation of vehicle.
13. (14" & 15 ½") If clutch brake is to be used, place on transmission pilot shaft.
14. (14" & 15 ½") Rotate release bearing housing on cover assembly until flat section is on top. NOTE: Bell housing cross shaft on some vehicles
may be below center. This requires the flat section on release bearing to be in down position. (Note position on clutch when being removed.)
15. (14" & 15 ½") Using extreme caution, guide transmission through cover and disc assembly, rotating bell housing shaft so that release yoke
fingers are clear of the pads on the release bearing assembly. WARNING: Transmission must not hang or be forced into the clutch. This can warp
the clutch disc and prevent the clutch from releasing. Lubricant on input shaft splines can cause slippage or release problems.
16. (14" & 15 ½") Start bell housing cap screws and tighten progressively to the vehicle manufacturer's recommended torque.
17. (14" & 15 ½") Release bearing has been pre-packed with grease from the factory.
18. (14" & 15 ½") Install clutch linkage. See "Clutch Adjustment Procedure".
For 14" and 15 ½" Two-Plate Clutches
3