Technical Modifications Engines 601, 602.91, 603.91 Combustion III
Designation | Nature and reason for modification | Production breakpoint | Op. No. |
Air cleaner | Air cleaner covered and air cleaner element engines 602.91, 603.91 with exhaust gas recirculation made of modified material | December 1989 | 09-400 |
Air guide housing | Material change Engines 601.911/912 with Code 62/0 | June 1990 | 09-400 |
Bracket of air cleaner cross pipe | Modified Engine 601.913 | August 1993 | 09-405 |
Preglow system wiring harness | GND cable extension and routing modified. Engine 601.911 | September - October 1990 | 14-180 |
Intake manifold | Material change Engine 601.911 | September - October 1990 | 14-180 |
Intake manifold gasket | asbestos-free Engines 601.912 and 602.912 | October 1990 | 14-180 |
Preglow system wiring harness | GND cable extension and routing modified Engine 601.911 | March - October 1991 | 14-180 |
Intake manifold | Material change Engine 601.911 | March - October 1991 | 14-180 |
Preglow system wiring harness | GND cable extension and routing modified Engine 601.911 | January 1992 | 14-180 |
Intake manifold gasket | Improved material Engine 601.912 | December 1993 | 14-180 |
Exhaust gas recirculation valve | Valve carrier made of modified material (improved corrosion protection) | June 1989 | 14.1-350 |
Corrugated tube between exhaust manifold/EGR valve | Reduced number of corrugations Engines 603.912/913 | December 1990 | 14-350 |
Corrugated tube clamp | Shape modified to facilitate removal and installation Engines 601.911/912, 602.911/912 and 603.912/913 | March 1991 | 14-350 |
Corrugated tube between exhaust manifold/EGR valve | Material change Engines 603.912/913 | April 1991 | 14-350 |
Exhaust gas recirculation valve (EGR) | Design change for muffling noise Engines 601.911/912 | June 1991 | 14-350 |
Exhaust gas recirculation valve (EGR) | Design change for muffling noise Engines 601.911/912, 602.911/912 and 603.912 | July 1991 | 14-350 |
Exhaust gas recirculation valve (EGR) | Design change for muffling noise Engines 601.911/912, 602.911/912 and 603.912 | October 1991 | 14-350 |
Corrugated tube between exhaust manifold/EGR valve | Material change Engine 603.912 | October 1991 | 14-350 |
Exhaust gas recirculation valve (EGR) | Modified engines Engines 601.912/913 | May 1993 | 14-350 14-360 |
Exhaust manifold | Unpainted Engines 601.911/912/913 | June 1993 | 14-350 |
Preglow system | Ground cable lengthened and routing modified Engine 601.911 | September - October 1990 | 15-705 |
Preglow system | Ground cable lengthened and routing modified Engine 601.911 | March - October 1991 | 15-705 |
Preglow system | Ground cable lengthened and routing modified Engine 601.911 | January 1992 | 15-705 |
Fulcrum lever | Fulcrum track modified from round to angled Engines 602.911/912 | January 1990 | 30-300 |
Ball socket for tension/ | Material modification, snap rings strengthened Engines 602.911/912 and 603.912/913 | March 1990 | 30-300 |
Ball socket for tension/ | Material modification, snap rings strengthened Engines 601.911/912 | April 1990 | 30-300 |
Fulcrum lever | Pivot point repositioned engines 601.911/912 and 602.911/912 with manual transmission and ARF with mechanical throttle valve | August 1990 | 30-300 |
Accelerator control damper | Strengthened restoring spring Engine 601.913 manual transmission Engines 601.911/912/913 |
February 1993 July 1993 | 30-300 30-310 |
Accelerator control bearing bracket | Torsion spring modified Engine 601.913 | July 1993 | 30-300 |
Accelerator control lever | Height of roll reduced to minimize friction forces Engine 601.913 | November 1993 | 30-300 |
Accelerator control damper | Tension/pressure damper with highter damping rate Engines 601, 602 and 603 | September 1986 | 30-310 |
Spring rod | More even operation of accelerator control Engines 602 and 603 | September 1986 - August 1987 | 30-310 |
Fuel tank | Material modification Models 201.122/126/128 (except ) | September 1989 | 47-100 |
Fuel return flow hose | Check valve installed so that injection pump cannot draw in fuel from return flow when feed valve closed. Engine 601.912, Code 885 only (immobilizer) | February 1994 | 47-100 |
Fuel tank, injection pump | For vegetable oil methyl-ester fuel Engine 601.912, only Taxi Germany | December 1994 | 47-100 |
Fuel hose | Modified to improve starting properties Engine 601.912 | April 1995 | 47-100 |
Vent pipe fuel tank/expansion reservoir and connection hose expansion reservoir | Extended to improve removal and installation Model 202 | May 1994 | 47-105 |
Catalytic converter | Reduction in coating quantity (platinum) Engine 601.912 | May 1993 | 49-100 |