Ss-worldwide Automobile Parts User Manual download pdf (Page 4)

can drastically alter their strength and their critical

properties. The degree of change depends upon the

temperatures reached and the duration of exposure.

When powder coating or otherwise processing alloy

parts, S&S exposes them to a maximum temperature

of 370°F for no longer than 20 minutes. Under no

circumstances should parts be heated past 400°F!

E. Preparation and Installation

1 . Inspection

a Inspect crankcases to confirm that they are

correct style and machined for correct bore

size. Refer to tag wired to crankcases.

b. Verify that serial numbers on crankcases

match numbers on packing carton and

certificate of origin. Contact S&S immediately if

numbers do not match.

NOTE - Valid certificate of origin is required for any transfer

or sale of aftermarket crankcases or complete engines built

with aftermarket crankcases. Certificate of origin is required

to title and license any motorcycle which is to be driven on

public streets and highways.

2. Crankcase Test Fit

If possible, bare crankcase should be positioned in

motorcycle frame before assembly to check

clearances.

a. Test-fit instructions for Twin Cam style

cases with stock Twin Cam style engine

mounts.

Position case in frame, check for clearance at

frame, and alignment to transmission. It is a

good idea to replace rubber engine to

transmission mounts at this time. Old mounts

deform over time and may and induce

unwanted stresses on the engine case.

b. Test-fit instructions for Twin Cam style

cases with Evo Style motor mounts.

S&S Twin Cam style crankcase installation in

Evolution style motorcycle frame is essentially

the same as stock, although additional

clearancing and shimming may occasionally

be required. When this style of case is solid

mounted instead of rubber mounted, additional

care must be taken in installing the case. Main

areas of concern are between cases and

frame motor mounts. Checking clearance

around and between case mounting bosses

and frame is necessary to insure that

crankcase rests squarely on motor mount pad

and no stress is applied to crankcases when

mounting bolts are tightened. Shimming may

be required to compensate for variances

between frames.

NOTE - Crankcases damaged by improper installation are

not covered under warranty.

CAUTION - Improper alignment of engine and frame

mounts may cause abnormal stresses resulting in

damage to crankcases or other parts.

To check clearance perform following steps:

1. Assemble case halves using case bolts. Tighten to

snug. Torquing bolts to final specification is not

necessary.

2. Clean frame engine mounts and carefully remove

any irregularities from mounting surfaces. Also

inspect crankcase mounting bosses for burrs.

3. Position case assembly in frame.

4. Install engine mounting bolts in motor mounts, and

check clearance between mounting bosses on

cases and frame and any other areas where frame

and cases may contact each other. Bolts may be

difficult to install if contact is severe.

5. If cases contact frame, remove them and relieve

just enough material in offending area to provide

clearance.

6. Place cases in frame, install one rear mounting bolt

and snug nut.

7. Measure gap between crankcase mounting bosses

and frame motor mounts with feeler gauge to

determine if shimming is required.

8. If gap exists, fabricate shim just thick enough to fill

gap

9. Install opposite corner shim and mounting bolt and

nut, and tighten identical to other bolt.

10. Check other corners with feeler gauge to confirm

thickness required is same as before. If not,

determine cause and correct.

3. Pre-Assembly Cleaning

Clean crankcases in hot soapy water or solvent to

remove any dirt or contamination which may have

been introduced during shipping, handling, or set-

up. Dry components and check passages with

compressed air.

WARNING - Compressed air and particles dislodged by

compressed air are potentially harmful. Wear

protective goggles when using compressed air and

always direct air stream away from yourself and others

nearby.

Hardware Identification and Installation

NOTES

●

When installing hardware, be careful not to cross-thread

fittings or damage threads. Damage caused by improper

installation of hardware will not be covered under warranty.

●

To prevent galling, apply anti-seize compound, pipe

sealant, or Teflon tape to threads of all steel fittings prior to

installation in crankcase.

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