Mc Leod 1300 Series Bolt On Hydraulic Bearing User Manual

Page 4

Measure from the front of the transmission to the face of the throw-out bearing to determine Dimension “B”. See

figure 1. Note that measurement here____________.

Step 2) With the bell housing, flywheel, disc and pressure plate bolted to the engine, measure the distance from the

rear surface of the bell housing to the top of the release fingers on the pressure plate to determine Dimension “A”.

See Figure 1. Note that measurement here_____________________.

Subtract dimension “B” from dimension “A”. Note that number here_______________.

You need a minimum .100” and a maximum of .250” for this assembly to function properly. Example: Dimension

“A” (2.600”) minus dimension “B” (2.500”) will equal .100”.

The shims shown in Figure A can be added or removed from the piston collar by pulling on the bearing. It is
easy to disassemble. Remove or add a shim to obtain the proper clearance as noted above. Each shim is
.150” thick.

STEP 3) The braided steel AN -4 lines on the hydraulic bearing are designed to swivel. Before installing the

transmission, swivel both lines forward parallel with the input shaft. See Figure 1. Tie a heavy string around both

lines, making the string long enough to feed the string through the opening in the bell housing where the lines will

feed through (typically the fork hole) before the transmission is fully engaged into the bell housing. As the

transmission is installed into the bell housing the string can be pulled simultaneously, thus swiveling and guiding

the AN -4 lines out through the bell housing hole. The AN -4 lines must not contact the spinning clutch or flywheel

when the engine is running. Be sure the protective hose on the lines are in the proper position to protect the AN -4

lines from chafing on the bell housing. Always have the AN -4 line with the bleeder valve at the top when the

bearing is properly installed. It is OK to swap the lines on the swivel fittings if necessary. Remember the
line with the bleeder valve must be at the top position!

Step 4) After securing the transmission and driveline; connect a line (not included with the bearing assembly) from

the master cylinder to the input line (bottom line) of the hydraulic bearing using an AN -4 female flare. This

bearing assembly is supplied with an AN -4 fitting screwed into the line. Fill the master cylinder with DOT 3 or

DOT4 brake fluid. DO NOT USE SILICONE BASED FLUID or DOT 5 FLUID!! Use of silicone or synthetic fluid will

damage the o-rings resulting in leaks and or damage to the assembly. After the master cylinder is filled, bleed the

bearing assembly. Example: Pump the pedal 3 to 4 times, with the bleeder valve open and the end of the opening

submerged in a cup partially filled with brake fluid. This will release fluid and air trapped in the system. Continue

the bleeding process until all of the air is removed from the system. Always keep fluid in the master cylinder while

performing the bleeding process. Now reach into the cup and tighten the bleeder fitting. Set the cup aside and then

be sure to tighten the bleeder valve. Once the bleeding is complete refill the master cylinder, just don’t fill it all the

way to the top. The fluid level should be ½” to ¾” from the top. This will allow room for the brake fluid in the

reservoir when the bearing self adjusts. Unlike brakes, the fluid level will rise

I0024

in the master cylinder, as the clutch

wears, not lower.