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MG Car Repair/Mgb wiper motor


Hi, I have an mgb roadster 1978 . Can you tell me the best way to take out the wiper motor as it is very inaccessible? Thanks

Hi Pete.  I use a 7/16 socket and a 4 inch long 1/4 drive extension to undo the two bolts that hold the motor to the bulkhead.  There is a BIG nut on the end of the motor that you must undo.  Remove both wiper arms from the spindles.  Unplug the electrical connector.  

At this stage I protect the inside of the car with newspaper and put on a pair of disposable gloves.    The rack will be covered with grease so be prepared for the mess. Remove the motor from the car by drawing the wiper rack out of its tube.

Off the car, the rack can be removed from the motor after the lid has been taken off.  The lid is held by four small screws with 2BA hex heads.  

As they say in the manual, "re-assembly is the reverse of these instructions"

Have fun.

MG Car Repair

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Barrie Jones


MG Sports Cars from 1949 to 1980 - Including MGB, MGBGT V8, TF1500, TF, TD and modern Midgets. I also specialise in SU carburettors, Lucas wiring, suspension, steering & brakes.


I have owned my 1955 TF1500 since 1966. Technical specialist for the TD and TF with the MG Car Club T Register. Also owned 20 MGBs and currently own an MGBGT V8. Written 3 books on MGs and produced a DVD on how to strip and rebuild the TD/TF gearbox.

MG Car Club.

Barrie's Notes on the 1953-55 MG TF (author). /=====/ Barrie's Notes on the MGB (author). /=====/ Barrie's Notes on the MGB GT V8 (author). /=====/ The Essential Buyer's Guide to the MG TD, TF and TF1500. (author)

M Phil, C Eng, BSc (Eng).

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