ISM, ISMe, and QSM11 – 001-023   Crankshaft Seal, Front

Table of Contents

Install
 
Unitized Seal

Install

TOC

Unitized Seal


The capscrew hole spacing on the front crankshaft oil seal is not symmetrical.

Start three, 60 mm [2 in] setscrews into holes as shown in the illustration. Make certain that the hexagonal socket is located to the outside.

 
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The gear cover, front crankshaft oil seal, and carrier gasket are each marked with an arrow, located at approximately the three-o’clock location.

Orient by stacking the arrows. The arrows point clockwise.

 
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 CAUTION 

The wear sleeve must not be disassembled from the seal prior to (or during) seal installation. If the wear sleeve and seal become separated during installation, the assembly must be discarded.

The unitized front crankshaft seal includes a wear sleeve that must be pressed into the crankshaft. Use crankshaft seal replacer kit, Part Number 4918798, or equivalent.

NOTE: Do not use any kind of lubricant to install the seal.

Position both the seal and replacer over the setscrews together, to avoid accidentally separating the seal from the wear sleeve.

Confirm orientation. Make certain that the tool, seal, gasket, and gear cover holes align.

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 CAUTION 

When tightening the hexagon nuts to install the oil seal onto the crankshaft, make certain that the seal remains parallel to the front cover. Failure to do so can result in damage to the oil seal.

Assemble three washers and three M8 hexagonal nuts onto the setscrews.

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Tighten the hexagon nuts one revolution at a time. Alternately tighten in a clockwise pattern until the seal and tool seat against the front cover.

Tighten the three hexagonal nuts.

Torque Value:  7  n.m  [62 in-lb]

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Apply sealant to the capscrews, install and tighten the three capscrews through the replacer plate into open mounting hole locations.

Torque Value:  7  n.m  [62 in-lb]

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Remove the replacer tool and setscrews before installing the three remaining capscrews.

Torque Value:  7  n.m  [62 in-lb]

Follow a star pattern to tighten the six capscrews to final torque.

Torque Value:  20  n.m  [177 in-lb]

Check the difference in the final installed height of the seal flange versus the wear sleeve.

The difference must not exceed 1 mm [0.04 in].

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Last Modified:  05-Mar-2009