Troll Hunter Posted December 24, 2018 Share Posted December 24, 2018 My vehicle is a 1991 110CSW, VIN .... HA905197, but has a 300Tdi engine. The power steering box has a crack in the female threaded socket for the fluid return to the reservoir, see photo: This looks to me to be a fairly difficult fault to repair, but if members think otherwise I'd be very glad to receive suggestions. Now my question. The original box is a 6-bolt (Gemmer?) and I have a recon 4-bolt box, see photo. The only visible difference in the fitting appears to be the flat on the output shaft of the 6-bolt box, which is not present on the 4-bolt box, see photos. So, can I replace the 6-bolt box with the 4-bolt box without any problems? Do I need to swap the output shafts over? Are there any other differences I have not recognised? All views,, advice and experiences will be very much appreciated. Thank you. Mike Quote Link to comment Share on other sites More sharing options...
Stellaghost Posted December 25, 2018 Share Posted December 25, 2018 I think that could be welded and tapped out you would need to degrease it and a gentle amount of localised heat to burn any oil residue away also plug the hole before running a tap down it to prevent swarf getting into the pump body. As for fitting the other pump give it a try nothing to lose as your 6 bolt pump is already off however the 4 bolt pump is longer from the fixing holes than the 6 bolt one and this may clash with your front cross member have had that particular problem in the past but was a total off road car so I modified the cross member if you offer it up to the vehicle you will see what I mean hope this helps Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted December 25, 2018 Share Posted December 25, 2018 The 4 bolt should fit in place of the 6 bolt, without issues. The flat on the *input * shaft is not an issue, just fit in the normal way with the pinch bolt. Hydraulic fittings/lines are the same. Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted December 25, 2018 Share Posted December 25, 2018 Indeed, I have done this on mine - replacing a 6-bolt with a 4-bolt. Pipe fittings are the same as above. I believe the drop arms are different, so worth buying a new 4-bolt drop arm with new ball joint fitted. You can get Adwest ones for reasonable money, alternatively do the Disco drop-arm conversion that many carry out. My understanding is that 3-bolt and 4-bolt Adwest boxes have a common drop arm, but the Gemmer 6-bolt one is different. And strangely the 6-bolt Gemmer has the same pipe fittings as the 4-bolt Adwest, but the 3-bolt Adwest has different threads. Quote Link to comment Share on other sites More sharing options...
western Posted December 25, 2018 Share Posted December 25, 2018 Straight swap, my 110 used to have a 6 bolt box, changed to a 4 bolt with no extra bits to replace. Quote Link to comment Share on other sites More sharing options...
PaulN Posted December 25, 2018 Share Posted December 25, 2018 Amazing 'Bin there dunnit' help you guys - Great Forum! - Happy Christmas! 😊 Quote Link to comment Share on other sites More sharing options...
bodumatau Posted December 25, 2018 Share Posted December 25, 2018 (edited) to piggy back on the post....... I need to replace my drop arm ball joint, in my old parts manual I see a "kit" part number of RTC 4198, is this correct? I see a circlip on the back of the ball joint, are these easy to change or do I need to take out the whole drop arm? mine is a LHD 1983 110, I suspect the power steering might have been fitted at a later stage. Edited December 25, 2018 by bodumatau added vehicle info Quote Link to comment Share on other sites More sharing options...
western Posted December 25, 2018 Share Posted December 25, 2018 Sorry cannot help with the missing photo's. if you have a 4 bot steering box the drop arm ball joint kit is/por was RTC4198 https://www.brit-car.co.uk/search.php?query=RTC4198&xBrand=&part_type=&xSupplierID=&product-sort=&xPerPage=10 Quote Link to comment Share on other sites More sharing options...
Troll Hunter Posted December 25, 2018 Author Share Posted December 25, 2018 Well, thank you, all, you've given me a lot of confidence that I can change out the box without any trouble. A great Christmas present. Now I can attempt to repair the old box without worrying that if it doesn't work out I'll be looking for a new one. And I wish you all a very good Christmas and a muddy new year. Mike 1 Quote Link to comment Share on other sites More sharing options...
western Posted December 25, 2018 Share Posted December 25, 2018 IIRC the 6 bolt Gemmer steering boxes are no longer made or available new, the 4 both is a much more prolific unit & easier to obtain recondintioned or 2nd hand. my 6 bolt went to the scrapyard a few months ago. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted December 27, 2018 Share Posted December 27, 2018 Just for the sake of pedantry... the Gemmer 6-bolt unit is described in the factory manual as the "heavy duty" and the 4-bolt "light duty"... I know everyone rips them off and fits 4-bolts because they're cheap and plentiful but it's worth mentioning LR made a distinction between the units. Quote Link to comment Share on other sites More sharing options...
Troll Hunter Posted December 28, 2018 Author Share Posted December 28, 2018 It's OK, FF, pedantry isn't illegal, and it's good to know some of the history and thinking behind apparently pointless changes. Mike Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted December 28, 2018 Share Posted December 28, 2018 FF, pedant ? Surely not ! 😉 Mo Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted December 28, 2018 Share Posted December 28, 2018 When accused of similar, 'no, accurate. ' is the reply 😛 Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted December 28, 2018 Share Posted December 28, 2018 Well, it's more punctilious than pedantic if you want to split hairs... 1 Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted December 29, 2018 Share Posted December 29, 2018 Some would say anal 😉 Mo Quote Link to comment Share on other sites More sharing options...
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