NHTSA ID Number: 11006924
Manufacturer Communication Number: CBR-523 202408
TSB/Document Date: 2024-09-04
Summary
CBR: Overhead Wear Overview - Model Year2018 To Current (Common Rail Fuel System ONLY)
9/3/24, 9:23 AM
Article
Preview Solution CBR-523-5
Overhead Wear Overview - Model Year
2018 To Current (Common Rail Fuel
System ONLY)
Published 13 August 2024
Valid for all Mack
and Volvo models 2018 to current.
Refer to the images below to help determine the severity of the wear on the
overhead components.
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Pictured above are 3 different wear levels of the " dog bones " on the exhaust
brake rocker.
Pictured above are 3 different wear levels of the injector adjusting screws.
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Pictured above are 3 different wear levels of the injector pivot cups.
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Broken injector spring retainers may also be found.
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See the parts and tool list below.
NOTE: After all repairs have been made perform the following additional
steps.
Change the engine oil
Replace the oil filters
Replace the fuel filters
Update the EMS software
Required Rocker Arm Repair Parts With VEB
Item
Description
Qty
1
Inlet & Exhaust, Non-Brake, Ball Socket Kit
6
2
3
Rocker Arm, VEB+ Brake Assembly
Pumping Injector and Sleeve Kit
6
3
21460261
85153229
4
Leaf Spring, Rocker Arm, VEB6
6
20728004
5
6
Injector Pipe
Injector Pipe
1
2
22074665
22074666
7
8
Connection Pipe Assembly, Control Valve VCB
Oil Filter, Long Life
1
2
22782247
21707133
9
Oil Filter, Bypass
1
21707132
10
11
** Fuel Filter, Standard
** Fuel Filter, Long Life
1
1
21764964
22474709
12
Fuel Filter, Primary
1
***
21054149
Required Rocker Arm Repair Parts Without VEB
;
Live UI
Item
Description
Qty
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1
Inlet & Exhaust, Non-Brake, Ball Socket Kit
12
2
3
Pumping Injector and Sleeve Kit
Injector Pipe
3
1
85153229
22074665
4
5
Injector Pipe
Connection Pipe Assembly, Control Valve VCB
2
1
22074666
22782247
6
Oil Filter, Long Life
2
21707133
7
8
Oil Filter, Bypass
** Fuel Filter, Standard
1
1
21707132
21764964
9
10
** Fuel Filter, Long Life
Fuel Filter, Primary
1
1
22474709
***
21054149
NOTE: Refer To Impact For Parts Look-Up For The Most Current Part Number /
Supersession Refer To Parts Compass / Parts Detail Part Lookup
Rocker Arm Repair Special Tools
;
Live UI
Item
Tool Number
Tool Description
1
88800232
SETTING TOOL
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2
3
88800387
88800460
PULLER
SLEEVE
4
5
88800513
88800550
MANDREL
TOOL KIT
6
7
88840317
88870007
CRANKING ADAPTER
EXTRACTOR
8
85112740
COOLANT EXTRACTOR / INJECTOR
9
10
88870008
85109250
LIFTING TOOL
LIFTING TOOL
11
12
88890187
9996049
BAR CODE SCANNER
DRAIN HOSE
13
9998249
PROTECTING SLEEVE
14
15
9998250
9998251
SEALING RING
SEALING RING
16
KEM J-42885
INJECTOR TUBE BORE CLEANING KIT
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TSB/Document ID: CBR-523 202408
Replacement Service Bulletin Number:
MFR Communication Date: 2024-08-13
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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