Solution K40233453
Thursday, February 6, 2020 9:47:47 PM CET

** SOLUTION **
Title

Vehicles Equipped With An Automated Manual Transmission (AMT) - Input Shaft
/Spigot Bearing Repair, Replacement, Inspection And Reuse Guidelines - US07 And
Newer Emissions, Model Year 2008 And Newer

Mack Models
Mack Model

AN - Anthem , CHU - Pinnacle, Axle back , CXU - Pinnacle, Axle front , GR - Granite
, GU - Granite , PI - Pinnacle , TD - Titan

Volvo Models
Volvo Model

VN , VNL , VNM , VNR , VNX , VAH , VHD , VT

Emission Standard
Emission Standard

US07 , US10 , US10+OBD13 , US14+OBD13 , US14+OBD15 , US14+OBD16 , US
17+OBD16 , US17+OBD18 , US17+OBD19

Transmission
Transmission

AMT-F Without Crawler Gears , AMT-C , AMT-D , AMT-C , AMT-D , AMT-F
Without Crawler Gears

** SOLUTION **
Cause

Process for inspecting an AMT gearbox for suitability for repair or requirement for
replacement of the input shaft after the spigot bearing and input shaft have been
determined to be damaged or failed. This document can be used as a basis for other
repairs that involve the components that are associated with the input shaft replacement
procedure to allow repair of gearboxes without the need for replacing a major
component like the main gearbox.

Solution

Important Notes
• Many of these items may have already been evaluated during the diagnostic process
and as such there is not a SRT associated with this list as it is just a list of items to check
and evaluate to be sure the unit can be repaired at the dealer level.
• The Transmission Reuse or Replacement Guidelines document should be used as a
visual reference as needed to accompany this inspection. Individual components that are
removed during this repair should be inspected on their own merit and replaced as
needed.
• Failures that have large amounts of debris in the gearbox must have the oil pump
inspected and cleaned out or replaced. The pressure relief valve must be replaced and
the filter housing completely disassembled and cleaned out.

Procedure

Items 1-7a are critical to the viability to a rebuild option. If you have made it that far
without being told to replace the gearbox then the repair of the gearbox is acceptable.
1. Remove control housing if not already removed and inspect gears.
a. Is there damage to any of the gears on the main shaft or countershaft of the
gearbox?
i. Yes ---replace short gearbox
ii. No----continue with inspection
2. Remove range housing assembly
3. Remove Lube tube from rear of Main shaft.
a. Are there metal flakes built up inside the main shaft and visible on the tube
and o-rings?
i. Yes-replace short main box and replace oil cooler.
ii. No-proceed with inspection.
4. Remove one of the rear bearing retainer covers.
a. Does the cover have a pin in it?
i. Yes-proceed with repair
ii. No-Update to current configuration of pinned bearings during repair or
install short gearbox.
5. Remove clutch housing and inspect components for damage.
a. Is the Input shaft or spigot bearing damaged?
i. Yes - continue with disassembly and inspection.
ii. No- continue with disassembly and inspection.
b. Is the end of the main shaft or lube tube damaged or blue?
i. Yes---replace short gearbox
ii. No- continue with disassembly and inspection.
6. With gearbox in horizontal position lift the main shaft to disengage the front gear on
main shaft from countershaft gear and spin the gear.
a. Does the gear and bearing rotate freely and smoothly
i. Yes-proceed with inspection
ii. No-Replace short gearbox
.

Please click here to view the Pre-load worksheet .
The shim kit required to complete the repair is part number 85152839. Click here access
the Shim Thickness Calculator.

If at this point if you have not been instructed to replace the gearbox, the input shaft
repair can proceed. Please refer to the published repair methods for further information.

Solution visibility

Dealer distribution

Function(s)/component(s) affected
Function affected

Input Shaft , Main Shaft , Front Housing (Gearbox)

Function Group
Function Group

431 gearbox, manual , 451 propeller shaft , 453 centre bearing; mounting

Customer effect
Main customer effect

noise , vibration , judder , slipping

Conditions
Vehicle operating mode

acceleration , in reverse , during engagement

Administration
Author

A169304

Dealer ID

A169304

Last modified by

A241298

Creation date

24-09-2019 15:09

Date of last update

10-01-2020 17:01

Status

Published

UNCONTROLLED COPY. Printed document is for temporary use only and should not be retained.