Alamo 803213C, FC-FL-0001 External Coil Slip Disk Replacement

MAINTENANCE

INTERSTATER 03/09 Maintenance Section 5-25

MAINTENANCE

External Coil Slip Disk Replacement

A. TO DISASSEMBLE EXTERNAL COIL SPRING CLUTCH (Figure Mnt-FL-0024)

Before beginning disassembly, remove or fold shields out of the way and clean off dirt and trash from the

area.

1. Remove two Attaching Bolts (6). Remove Clutch Assembly from shaft of Gearbox. Leave Driveline or

Driveline Half attached to Clutch.

2. Loosen six Adjusting Bolts (1). LOOSEN EACH BOLT A FEW TURNS AT A TIME - NOT ALL AT ONCE.

Continue in rotation until Nuts are loose. Remove these Bolts. Flange Yoke (9) will slide off. On Clutches

that have Dust Shields (11), Shields will slide off with Flange Yoke. No te: Some ty pes do n ot hav e Dust

Shields.

3. On the opposite side, Outer Flange (2) will slide off which will allow Clutch Plate (3) to slide over notches

on outside diameter of Clutch Body (5).

4. Remove Plate with six bolt holes (7). Note: Bolts (1) go through these holes.

5. Remove the four Friction Disks (4) and discard. DO NO RE-USE.

B. TO CLEAN AND INSPECT

1. Inspect all components for rust, wear, or damage. Check Spacer (8) for scoring or excessive wear. Clean

Clutch Plates and Drive Plates with a wire brush as required to remove any rust.

C. TO REASSEMBLE

1. After all parts have been inspected, cleaned or replaced as necessary, replace components in reverse

order from disassembly USING THE NEW, IMPROVED DISKS. Do not tighten the six Adjusting Nuts and

Bolts (1) until assembly is complete.

D. TO ADJUST

To adjust Slip Clutch, tighten Bolts (1) until the Nut makes contact with Compression Spring (10).

1. After all six Bolts have been assembled so that Nuts contact Springs, mark the position of the top flat on

each Nut. Tighten Nuts 1-3/8 turns as follows: Do NOT tighten o ne bolt completely. T i ghtening as shown in

rotation will put equal pressure all the way around on Friction Disks and Drive Plates.

a. Tighten the Nuts (1) one-half turn in rotation.

b. Tighten one-half turn again until the ma rks on the Nuts are on to p as in the beginning.

c. Then, carefully tighten 3/8 of a turn. As a double check, the Springs should now be

COMPRESSED TO 1-11/32" (1.34") TO 1-5/16" (1.31") long.

1. Re-assemble Clutch to Gearbox. Tighten Bolts (6) securely.

2. Clutch slips too easily, STOP PTO AT ONCE. Tighten each Adjusting Nu t (1) NO MORE THAN ¼ TURN

AT A TIME. NEVER TIGHTEN SPRINGS SHORTER THAN 1-9/32" (1.28") LONG EVEN AFTER DISK

WEAR.

NOTE: EXCESSIVE SLIPPING WILL BURN UP DISKS AND SLIP CLUTCH TO THE POINT WHERE THE

CLUTCH IS NOT REPAIRABLE. HOWEVER, EXCESSIVE TIGHTENING WILL PREVENT THE SLIP

CLUTCH FROM SLIPPING AND CAN LEAD TO FAILURES OF DRIVETRAIN COMPONENTS WITH

RESULTING DOWNTIME.

E. TO REPLACE SHIELDS

1. Make certain that all Driveline Canopy Shields are in good repair and rotate smoothly on the

Drivelines. Replace Bearings and/or Integral Shields if necessary.

2. Re-install Gearbox Canopy Shields with the same hardware and tighten securely.