Engine: Technical Service Bulletins

• Customer Interest
  • Engine - Hydraulic Lash Adjuster Modified
  • Engine - Hydraulic Valve Tappet Inspection
  • Engine - Oil Filter Housing O-Ring Inspection
  • Engine - Drive Belt, Loose Tensioner
  • Engine - Continues to Run with the Ignition Off
  • Idle Speed - Installing Harness and Resistor
• By Symptom
  • Abnormal wear/deterioration
    • Engine Oil in Cooling System
    • Bearing in Tensioning Pulley Lever Worn
    • Excessive Power Loss (Above 10 kW) at Full Load
  • Customer Interest
    • Engine - Hydraulic Lash Adjuster Modified
    • Engine - Hydraulic Valve Tappet Inspection
    • Engine - Oil Filter Housing O-Ring Inspection
    • Engine - Drive Belt, Loose Tensioner
    • Engine - Continues to Run with the Ignition Off
    • Idle Speed - Installing Harness and Resistor
  • Driveability
    • Cuts Out When Pushing Clutch, Won't Idle
    • Excessive Power Loss (Above 10 kW) at Full Load
    • Shaking of Engine During Load Changes
  • Leaks
    • External Oil Leaks
    • Engine Oil in Cooling System
    • Oil Leak Between Cylinder Head and Gasket
    • Engine - Fixing Prechamber Leaks
    • Pre-chamber - Reworking Seating Surfaces
  • Loose
    • Engine - Drive Belt, Loose Tensioner
  • Noise
    • Engine - Hydraulic Lash Adjuster Modified
    • Engine - Hydraulic Valve Tappet Inspection
    • Noise from Hydraulic Valve Tappets
    • Engine - Oil Filter Housing O-Ring Inspection
    • Engine - Drive Belt, Loose Tensioner
  • Poor performance
    • Excessive Power Loss (Above 10 kW) at Full Load
    • Idle Speed - Installing Harness and Resistor
  • Vibration
    • Idle Speed - Installing Harness and Resistor
    • Shaking of Engine During Load Changes
  • Won't turn off
    • Engine - Continues to Run with the Ignition Off
• All Technical Service Bulletins
  • Engine - Caution Prior to Degreasing
  • Engine - Revised Specs Cylinder Head Bolts/Piston
  • Engine - (OM 601) Block Heater Caution/Announcement
  • Vehicle & Engine - Identification Numbers
    • Overview
    • B.List of Models & Engine ID. Data Model Year 1984
  • External Oil Leaks
  • Engine - Hydraulic Lash Adjuster Modified
  • Engine - Break-In Oil New and Rebuilt
  • Engine - Warning About Carbon Cleaning
  • Engine - Break-In Oil for Use After Major Repairs
  • Tools - Oil Evacuation Equipment
  • Engine Oil in Cooling System
  • Cuts Out When Pushing Clutch, Won't Idle
  • Camshaft - Removal & Installation Procedure
  • Timing Chain - Modified Connecting Link
  • Valve Guides - Special Tools for Checking & Replacement
  • Cylinder Head - Revised Bolts and Torque Specifications
  • Oil Leak Between Cylinder Head and Gasket
  • Engine - Fixing Prechamber Leaks
  • Engine - Hydraulic Valve Tappet Inspection
  • Noise from Hydraulic Valve Tappets
  • Hydraulic Valve Lifters - Improved Design
  • Engine - Oil Filter Housing O-Ring Inspection
  • Pinging With Cold and Warm Engine
  • Engine - Cylinder Wall Damage Assesment
  • Engine - Drive Belt, Loose Tensioner
  • Water Pump - Drainage Pipe Retrofitting Procedure
    • Overview
    • Models 124, 126 and 201 W/ Engines 601, 602 or 603
    • Model 201 With Engine 102 (Single-Belt Drive)
    • Models 124, 126, 129 and 201 W/ Engines 103/104
    • Model 126 With Engines 116.96/117.96
    • Model 129 With Engine 119.96
  • Chain Tensioner Loose
  • Timing Chain Tensioner - Modification
  • Bearing in Tensioning Pulley Lever Worn
  • Engine - Continues to Run with the Ignition Off
  • Vehicle - New Dealer Technical Bulletin
  • Engine - Oil Filter Cover, Torque and Updated Studs
  • Engine - Oil Filter Precaution For Gasket/O-Ring
  • Engine - Oil Capacity and Dipstick Modified
  • Engine Block Heater - Update & Installation Instructions
    • Overview
    • Model 107 and 126 Engine Types 116.96/117.96
    • Models 123 (Except 123.123) and 126.120 Engine Type 617.95
    • Models 123.123 (240D) Engine Type 616.912
    • Model 190E (W 201) Engine Types 102.961/985
    • Model 190D (W 201) Engine Type 601.921
  • 20_004AZ - 01/01/85 Updates 20_004Z 1984/11/01
  • Main Bearings - Cross References
  • Crankshaft Pulley - Modified Bolt
  • Oil Pan Gasket Leaky Near Right Front Timing Cover
  • Maintenance - Factory Approved Service Products
    • Overview
    • General Information
    • Engine Oil
    • Other Lubricants and Fluids
    • Fuel Requirements
      • 1. Gasoline Engines
      • 2. Diesel Engines
  • Engine - Oil Level Checking Procedure Revised
  • Engine - Oil Capacity Reduced
  • Oils & Fluids - Factory Approved Products
  • Engine - Oil Capacity Changed
  • Engine - Oil Level Should Be Checked
  • Oil - Updated Capacity
  • Valve - Tool Modification
  • Valve Spring Compressor - Modifications
  • Valve Springs - Tool Kit for Removing/Installing
    • Overview
    • Operating Instructions
  • Engine - Universal Valve Spring Remover/Installer
    • Overview
    • Operating Instructions
  • Excessive Power Loss (Above 10 kW) at Full Load
  • Excessive Power Loss (Above 10kW) at Full Load
  • Tools - Universal Valve Spring Tool
    • Overview
    • Operating Instructions
  • Special Tool - Universal Valve Spring Tool
    • Overview
    • Operating Instructions
  • Engine Mounts - Production Change
  • Engine Mounts - Part Modification
    • Overview
    • A - Work Instructions
    • B - Work Instructions
  • Jerking During Load Change
  • Idle Speed - Installing Harness and Resistor
  • Pre-chamber - Reworking Seating Surfaces
  • Engine - Oil Evacuation Equipment
  • Shaking of Engine During Load Changes
  • Engine - Caution When Installing Head Bolts
  • Instruments - (Oil Level Indicator) Testing & Function
  • Diesel Engine - Cold Weather Operation
    • Overview
    • Contents
    • 1. Conditioning the Vehicle For Cold Weather Operation
    • 2. Cold Weather Operating and Starting Hints
    • 3. Miscellaneous Cold Weather Recommendations
  • Diesel Eng. - Repair Kit For Cyl. Head Glow Plug Thread