Mc Leod 1400 Series Slip On Hydraulic Bearing User Manual

Page 4

Step 1) Screw the ‘Adjusting Screw’ all the way into the bearing assembly. Slip the bearing assembly onto the

input shaft collar on the transmission. Be sure the tapered side of the adjusting screw goes on the transmission

collar to seat against the base of the collar. This should be a tight fit, if necessary to ease installation lube the o-

rings with a light coat of Dot 3 brake fluid or o-ring assembly lubricant. Do not use grease or oil!! Be sure the AN -

4 lines are forward for ease of assembly.

Step 2) Take the measurement notes as ‘Dimension A’. Note that number here______________________.

Now measure from the front of the transmission to the front face of the release bearing, this is Dimension “B”.

See figure 1. Note that number here__________________.

Subtract dimension “B” from dimension “A”. Note that number here__________________. This will be the clearance for

the bearing to self adjust. The total allowable clearance is .100” to .150” maximum. If the bearing assembly is too

short, screw the bearing assembly out until the proper clearance is achieved. One complete turn will provide

.060”

bearing movement forward. Always have the AN -4 line with the bleeder valve at the top when the bearing is

properly adjusted. If the desired clearance can only be reached with the bleeder line at the bottom it is OK
to swap the lines on the swivel fittings. Remember the line with the bleeder valve must be at the top
position!

If ‘Dimension B’ is too long you can return the slip on bearing assembly to McLeod Racing for a Bolt-On style which

can be made shorter than the Slip-On style. This is why the dimension check prior to installation is critical.

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. These 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.

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. 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 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. 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

in the master cylinder, as the clutch

wears, not lower.

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