protruck
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Posts posted by protruck
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Hi Ian.
I you have the drums off and they are not ridged and look pretty even. then it might be worth using
some of these to rough the drums up.
ebay. item no 380349188451
I use these on new drums, on brand new axles to get the required braking efficiency for customer.
Hope this is of some help
Clive
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In this pic you can see the swinging arm.. no idea why on a drops it is in the way there is miles of room on a sldt rear bogie
The difference in the rear suspension between the rear of the SLDT and the Drops is.
SLDT is bolted to the outside of the chassis rail with bolts going through the two arms into the bogie crossmember.
Drops rear suspension unit is different. it is bolted to the bracket which mounts on the outside of the chassis for the multilift body mounting bracket. it dosn't have the mounting arms with bolts going through the chassis. but has bolts that go downwards through the bracket and into the bogie unit.
This brings the bogie unit out some 40mm or so per side.
Dave Crouch's rear bogie unit is the heavy duty Dana system or Kirkstal system as it was known back then,
This unit was also used on the rear engine scammell nubian airport crashtender.
The issue i think you had trying to fit the wheels and tyres that you had, was that the centre nave position on the
original drops rims compensated for the difference with the 40mm in the suspension unit position.
Hope this makes more sense and answers your question.
regards
Clive
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Hi Stal.
The scammell Drops mmlc's were origanly built with 1600x20 but were changed because of two
roll overs that happened on trials. The MOD asked for the smaller tyres that are fitted, but left the axle ratio's
as they where hence the speed difference.
I think this is the same that go's for your S26 sldt. I know that Dave crouch's EX-Army Demo 6x6 S26 recovery is
on 1600 x20 which if i remember correctly was scammells standard tyre for the MOD's S26 model.
Regards
Clive
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hi Cosrec.
I don't know the foden that well. but are there any relays in line that energise the soleniods. if so may be
worth a look, as i've had problems with corroded contacts in the relays before on a few scammells before now.
Clive
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No problem mate.
if you get stuck give me a shout.
Clive
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Hi Tony.
PM sent, Hope this helps.
Regards
Clive
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Hi Neil.
Found these on ebay.
Hope this helps.
Clive
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Signed.
Clive
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Great job.
I bet the little one is chuffed to bits.
Clive
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Cheers Nick.
works OK for me.
Clive
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Hi Richard.
Hope the scans are ok. if not, give me a shout and i will do them again.
Regards
Clive
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Hi Richard.
PM sent.
Clive
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hi Richard.
Try your local Unipart Automotive dealer. I normally pay around £35 for 20ltrs 10w30, and they have also
supplied me with an SAE 30 oil in the past.
Hope this helps.
clive
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Hi xtreme.
There were also problems with the Transfer box oil boiling up due to the small amount of oil contained in the box,
and the fact that there is no oil cooler fitted. We had problems with the input and output seals leaking due to over heating of the box.
As Richard said, the Michelin tyres are an issue on sustained maximum speed motorway work. After all,they were designed as an off road tyre. I think if my memory is correct, that Michelin state max speed and time restriction on there
XL, MXL, ZXL tyres for warranty. I know this is the case on the Airport crash tenders due to there high speed (85mph) and the need to meet NFPA regulations.
Hope this is of help.
Clive
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Hi Mark.
If Hans needs an air system drawing give me a shout and i'll scan them in and send them to you.
Clive
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keep up the great work Andy. your doing a fantastic job.
Clive
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Happy Birthday HMVF, and a big thanks to the people involved in running it.
May it live long and prosper.
Clive.
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I can remember loads of these blue invalid carriages being in a breakers yard in Bushey in the late 90's. Also
a very bad accident involving one on the A41 traffic lights just down from the old Odhams print site.
Clive
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Hi Alex.
Hope this Helps.
As fv1609 said, a must have in the toolbox for this type of situation.
Expansion set for Nutool set.
http://www.amazon.co.uk/Irwin-Bolt-Grip-Remover-Expansion/dp/B000QW6K8I/ref=pd_sim_diy_1
In my opinion the Irwin set with the expansion set is the best value for money. steer clear of the silverline version
of this product. not very good
Regards
Clive
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DROPS are notorious for loosing pressure on braking. That's why there is a manouver brake on the floor, so that you can load/off load flatracks without loosing too much pressure. This is just how they are.
I think from the original post, that the vehicle is not building air to it's max operating pressure (120psi). this is the reason
why it is not reaching the braking requirements on the German MOT test.
Clive
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Hi Jean. welcome to the forum. Enjoy.
Clive
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also have a look at the centre drum shaft bushes. top and bottom to make sure they are free. if the brake band is free this could be the problem. Give them a good socking with WD40 or diesel.
Hope this helps
Clive
Brake testing
in Transporters & Wreckers (All Nations)
Posted · Edited by protruck
Hi Ian.
The other thing that might pay you to look for is a local company that has a brake lining cutting machine for on vehicle machining. see link.
http://www.caorle-spa.com/inglese/BrakeServicing/LEV4/brake4engTE500.htm
http://www.caorle-spa.com/inglese/BrakeServicing/LEV4/brake4engTB500.htm
These machines cut the linings so that all of the brake lining is in contact with the brake drum and gives you maximum
brake lining contact.
This is the type of machine that we use to get the braking on new vehicles axles for customers pria to them going into
service and meet government figures.
The problem with new brake linings on S cam axles is that there is very little of the brake shoe in contact with the drum. ( leading edge) possibley only 30% on top and bottom of the lining. ( Hence this machine )
Hope this helps.
Regards
Clive