TSB180161-111220

Backside Idler Pulley and Bracket Removal for Peterbilt™ 520 Refuse Truck
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Technical Service Bulletin
Technical Service Bulletin:
Released Date: 12-Nov-2018
TSB180161
Backside Idler Pulley and Bracket Removal for Peterbilt™ 520 Refuse Truck
Backside Idler Pulley and Bracket Removal for
Peterbilt™ 520 Refuse Truck
Warranty Statement
The information in this document has no effect on present warranty coverage or repair
practices, nor does it authorize TRP or Campaign actions.
Contents
Product Affected
Engines:
• L9 CM2350 L116B
Original Equipment Manufacturer (OEM):
• Peterbilt™
Model:
• 520 refuse truck
Issue
Symptom:
• Malfunction of the backside idler pulley and/or bracket.
Verification
• Verify engine is equipped with water pump option WP97864 & WP97865
• Backside idler pulley and/or bracket has malfunctioned.
Reason for Change
Backside idler pulley can experience malfuntions. This change reverts to a prior
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Backside Idler Pulley and Bracket Removal for Peterbilt™ 520 Refuse Truck
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arrangement that is more robust.
Resolution
• Remove backside idler pulley and bracket and install new accesory drive belt. See
Service Instructions section below.
Part Identification
Service parts are available. See Table 1 below.
Table 1, Service Parts
Location
Part Description
Replacement Part
Number
1
11mm Capscrew
3926863
2
10mm Capscrew
5261711
3
10mm Capscrew
5261711
N/A
2405 mm Accessory Belt
3978284
Service Instructions
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Backside Idler Pulley and Bracket Removal for Peterbilt™ 520 Refuse Truck
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Figure 1, Capscrew Locations with Idler Pulley Bracket Installed
Remove
1. Remove accessory drive belt.
◦ See corresponding Service Manual. Reference Procedure 008-002.
2. Remove capscrews at locations 1, 2, and 3. See Figure 1 above.
3. Remove any broken capscrews, if necessary.
4. Discard accessory drive belt, cap screws, idler pulley, and bracket.
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Figure 2, Capscrew Locations with Idler Pulley Bracket Removed
Install
1. Install the long replacement capscrew, Part Number 3926863, at location 1. See
Figure 2 above. Torque to 24N·m [ 212 in-lbs ].
2. Install the two short replacement capscrews, Part Number 5261711 at locations 2
and 3. Torque to 24N·m [ 212 in-lbs ].
3. Install new accessory drive belt, Part Number 3978284.
◦ See corresponding Service Manual. Reference Procedure 008-002.
Production Status
Table 2, Production Information
ESN First
Build Date1
Plant
74384133
18 September 2018
Rocky Mount Engine Plant
Engine build date can be found on engine dataplate.
1
Document History
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11/15/2018
Backside Idler Pulley and Bracket Removal for Peterbilt™ 520 Refuse Truck
Date
2018-11-12
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Details
Module Created
Last Modified: 12-Nov-2018
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11/15/2018