K11907301
Service Bulletin Details
Public Details for: K11907301
Volvo chassis - equipped with an automated manual transmission model d or f ( i-shift, amt-d, amt-f ) - transmission oil leakage from transmission input shaft seal or output shaft seal - us10 and newer emissions, common model years 2010 and
- 9999 - 2020 - 2019 - 2018 - 2017 - 2016 - 2015 - 2014 - 2013 -
Models from 2020
2020 VOLVO VNX |
Models from 2019
2019 VOLVO VNX |
Models from 2018
2018 VOLVO VNX |
Models from 2017
2017 VOLVO VNX |
Models from 2016
2016 VOLVO VNX |
Models from 2015
2015 VOLVO VNX |
Models from 2014
2014 VOLVO VNX |
Models from 2013
2013 VOLVO VNX |
Solution K11907301 Friday, October 4, 2019 5:09:25 PM CEST ** SOLUTION ** Title Volvo Chassis - Equipped With An Automated Manual Transmission Model D or F ( IShift, AMT-D, AMT-F ) - Transmission Oil Leakage From Transmission Input Shaft Seal Or Output Shaft Seal - US10 And Newer Emissions, Common Model Years 2010 And Newer Volvo Models Volvo Model VNL , VNM , VNR , VNX , VAH , VHD Emission Standard Emission Standard US10 , US10+OBD13 , US14+OBD13 , US14+OBD15 , US14+OBD16 , US17+OB D16 , US17+OBD18 Engine family Engine family 11L Engine , 13L Engine , 16L Engine Transmission Transmission AMT-D , AMT-F ** SOLUTION ** Cause Accumulation of debris in the left side vent ports of the tranmsission main case (corrosion, road salt, dirt, etc) may result in oil leaks present at the transmission input and output shaft seals. The vent ports allow air exhausted from the shift solenoids and pistons to exit the main case. It also allows for equalization of internal and external pressures, as heat generated from operation will cause pressure in the case to increase. For the AMT-F this is the only vent for the TECU and gearcase. Blockage of these ports allows pressure to build to a point that it forces oil past the input and output shaft seals. In extreme cases, the pressure buildup can be high enough that operation can be affected. Excessive internal pressure caused by blocked vents may result in slow or sluggish gear shifts. Solution When diagnosing and repairing a shaft seal leak: 1. Check the vent ports on the upper left side of the the main gearbox housing for any sort of blockage or obstruction. Clogged vent ports 2. Clean out any debris that is observed during the inspection. (see inspection and cleaning below) 3. Check the tranmsission oil level in the gearbox. - If the lube level is excessively low: Proceed to the next section. - If the lube level is at an acceptable level: Fill the transmission oil to the correct level and check operation. For excessively low transmission oil levels, or customer report of noise from the transmission: 1. The transmission will need to be inspected for internal damage. Removal may be required for proper inspection. Inspection and cleaning Due to the location of the vent ports it is very difficult, in most applications, to see the vents. An inspection mirror and flashlight can be used to see if there is a buildup of roadsalt or other debris in the ports. If the ports are clogging then use a small screwdriver or similar tool to break up the deposits in the ports. Clean and remove the upper oil fill plug from the main case on the right side of the gearbox. Wrap a clean rag around an air nozzle and blow air into the case. Use proper eye protection. A complete seal is not needed. All you want to do is create enough pressure to force the debris from the vents on the left side of the case. NA_Sister solutions K21250579 Solution visibility Dealer distribution Function(s)/component(s) affected Function affected Input Shaft , Output Shaft , Lubrication Function Group Function Group 43 gearbox Customer effect Main customer effect fluid Noise whine Fluid problem leak , level incorrect Fluid implicated Transmission Oil Visual appearance leaking Conditions Vehicle operating mode Frequency of occurrence of problem Location of problem when driving random underneath cab Administration Author UT9268H Dealer ID UT9268H Last modified by RU4469V Creation date 13-06-2018 20:06 Date of last update 06-09-2019 21:09 Review date 01-07-2019 00:07 Status Published NA_Reviewer UT9268H NA_Author_Group GTT UNCONTROLLED COPY. Printed document is for temporary use only and should not be retained.