Subaru-robin SX17 User Manual download pdf (Page 14)

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5. BELT PULLEY INSTALLATION ONTO KEYWAY-TYPE CRANKSHAFT

When installing the belt pulley and/or clutch onto keyway-type

crankshaft (PTO shaft), proper and correct arrangements are needed.

The following illustration shows the correct installation of the applicable

component parts.

Pulley

Bolt

Washer

PTO shaft

Key

■

SAE (inch) keyway-type crankshaft

Washer; Use the washer (material; SS41P) with the thickness

described below;

SX17/21 SX30

Washer

Thickness

in. (mm)

0.177 (4.5)

or over

0.248 (6.3)

or over

ROBIN genuine part

Thickness;

in. (mm)

OD;

in. (mm)

ID;

in. (mm)

Material;

020-00801-40,

Washer

0.177 (4.5)

1.100 (28)

0.335 (8.5)

SS41P

(NA)

Bolt; Select the proper bolt and tighten it to the specied

tightening torque, as mentioned below;

SX17/21 SX30

Thread dimensions 5/16 – 24UNF2B 7/16 – 20UNF2B

Effective

thread length

in. (mm)

0.63 to 0.87

(16 to 22)

0.71 to 1.06

(18 to 27)

Strength “8T” or higher

Tightening Torque

ft•lb.(N•m)(kgf•cm)

14.8 - 16.2

(20 - 22)

(204 - 224)

36.9 - 44.3

(50 - 60)

(510 - 612)

(No ROBIN genuine part is available.)

Key Location

When using the belt pulley with the extended boss on both

side as shown in the illustration, put the spacer so that the

key stays in the keyway portion of the crankshaft.

Proper

Improper

Spacer

Key

Key should be within this portion.

Key

Belt Pulley Installation

Install the belt pulley in the no over-hang condition as shown

in the illustration.

Correct

Pulley

Incorrect

Crankshaft (PTO)

Pulley

Crankshaft (PTO)

Large over-hang

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Subaru-robin SX17 User Manual Page 14

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