Slider Shoe Lubrication - BOMBARDIER 1996 Ski-doo MX Z440 Handbook

Section 03 CHASSIS PREPARATION

SLIDER SHOE LUBRICATION

When running a vehicle on surfaces that do not provide adequate lubrication for the slider shoes,
the plastic will start to melt and stick to the track guide clips. This not only reduces the life of the
slider shoes but it also acts like a big brake that substantially reduces vehicle speed. If rules allow,
the most effective means to reduce slider shoe sticking is to apply a lubricant via a slide lubrication
system.
The lube system should have a tank of approximately 1 to 1.5 gallons, a control valve, pump and a
series of hoses and tees. A standard fuel pump can be used. The pump is operated by primary
crankcase compression and can be connected to the fuel pump impulse line with a tee. Because
the pump will operate whenever the engine is running, a control valve is used to conserve
lubricant for the race.
When plumbing your system, run the supply line from the tank to the shutoff valve first. Make sure
the valve is in a convenient location but protected from flailing arms and legs. Be certain to tie
wrap the lines away from any rotating, vibrating or heated surfaces. The outputs from the pump
should be routed through the tunnel just in front of and beneath the footrest.
The 2 front nozzles should be located on each runner where the track just begins to touch the slider
shoe. Drill a 1/4 inch diameter hole on the inner side of each runner down through the runner and
slider shoe. Using red or green Loctite, insert a 1/4 inch diameter by 1-1/2 inch long roll pin in each
location. Install the roll pin flush with the bottom of the aluminum runner. Do not let the pin
protrude into the slider shoe. Prepare the slider shoes by grinding a "V" groove approximately 1/
8 inch deep and 1/4 inch wide on the bottom side of the slider at each nozzle location. The grooves
should run almost to the sides of the slider but not protrude on the sides. This will allow a better
distribution of lubricant and make sure the lube supply does not become obstructed.
The 2 rear nozzles should be placed approximately half the remaining distance to the rear. For
straight line racing, install the roll pins using the same procedure as above. For oval racing, mount
the roll pins on the right side of both runners so the lubricant runs down the side of the slider shoe.
This lubricates the sliders and the guiding portion of the track clips where side loading is highest
during cornering. Be sure to clamp the side nozzles in place and secure all lines with locking ties.
Lubricant flow can be restricted at each nozzle by placing a Mikuni hex main jet inside each hose
(about a #500).
cannot
depending on your tank size and the length of the race.
Windshield washer solution at IOOYO concentration makes an excellent lubricant. If this starts to
"slush" at extremely cold temperatures, use a 50 / 50 mix of washer solution and antifreeze.
03-74
apply too much lube but you must last the race. Vary the restriction