Frequently asked questions
Welcome to our growing resource where we list typical enquiries, if you need an answer on a topic then please contact us.
Dear Dorman Diesels,
I have a Dorman 4LD engine powering a Newage 67kva Generator that has done less than 200 hours from new, and I need a new “lift pump” as the one currently installed does not work. I will use this unit to power a small “coal recovery plant” on my site.
The engine is a DORMAN 4LD – Engine Number: 04035 / 0972 / 121 – and this unit was originally installed as a back-up generator in an Aerospace Manufacturing Plant in London in the 1970’s or so I believe, and I have had it running. It runs very well, but now the “lift pump” is not providing any fuel to the twin fuel filters that are installed “in-line” before fuel is supplied to the SIMMS Fuel Injector Pump.
The lift pump currently installed does not look quite right to me, though it has the original Dorman Green Paint on its “body” and it seems to have been removed and refitted – probably many years ago.
Anyway, can you supply me with a new “lift pump” and if so then please let me know the cost and how I can pay. I would like any “parcel” to be delivered – to the address below – by Royal Mail – as I find couriers unreliable, so please include for this in your charge.
Any “hints or tips” you can give me will be most welcome.
Could you advise oil capacity for the following please:
Eng No 082322/0590/001
Eng No 123392/0690/003
We have a milk processing factory and it was established in 1956. We have Dorman generator in our milk collecting centre. at the moment, that generator is no in working condition due to under compression state. we couldn’t find any local agent for do that repair, so we disassemble the engine and we found the piston rings, scraper rings and cylinder liners should be basically replaced. so can I know about the possibility of getting spare parts and technical and operations manual of this generator engine? details of the engine was given below. I decided to do that repair due to alternator side is in good condition. thank you.
Engine type – 6LB
Make – W.H Dorman & co. ltd, British
Serial No – 71976
Spill – 26”
Would you be able to provide any details or information on the attached engine please we have just taken into stock?
We believe this is a Dorman 6750 Diesel Engine complete with Clutch, 6-cylinder engine.
I am trying to track down a manual for a Dorman 6 Cylinder Diesel (Type – 6LB, No. 68068, Crompton Parkinson, 3 Phase 77.5 KVA).
Was hoping you may know how to get PDF of the manual?
Hello, we have a Dorman Diesel Generator at one of our telephone exchanges, undergoing repairs at the moment.
I am hoping to get access to a schematic of sorts for the pulley wheel tensioner for the fan belts, as we have none of the original documentation on site.
The pulley tensioner had broken off so we’ve had a new pulley machined, but unsure on the order for the parts to go back together.
I have attached some pictures for reference, the generator details are as follows: Dorman 12QV 170kW Generator S/N 94282.
We have faced with piston breakage on our generator.
Engine type: 8SETCA2
Generator: Ser. Number: C060072/02
Please give us information about:
Causes of breakage
Spare parts offer for repair
Offer for repair and service