Martin Sprocket & Gear MST Idler Bushings User Manual

Martin, Mst idler bushing mounting instructions, Installation

INSTALLATION:

1. Make sure that the shoulder bolt

will fit into the mounting bracket.
2. Remove the outer jam nut.
3. Make sure the inner jam nut

is properly torqued (see Table A)

4. Prior to assembly of idler product onto bushing, make sure bushing barrel

and product bore are free of contaminants (such as paints or oils) and no

burrs exist.

Do NOT use lubricants or anti seize material

on bushing barrel, hub or threaded surfaces.

5. Align mounting holes, insert cap screws and loosely thread them into the

idler product.

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MST IDLER BUSHING

MOUNTING INSTRUCTIONS

TABLE A
Idler

SAE Grade 5

Mounting Bracket Tightening Torque

Bushing Shoulder Bolt Size Thread Depth (min) lb-in

N-m

H-BB 1/2

1/2-13NC

.77”

300

33.9

P1-BB 5/8

5/8-11NC

1.00”

350

39.5

Q1-BB 3/4

3/4-10NC

.923”

550

62.1

Q1-BB 1

1-8NC

1.08”

800

90.3

Mounting_Bushings.indd

4/16/03, 12:20 PM