Quote:
Originally Posted by nilanjanray Guderian,
Have you practiced changing the tyres of the Admiral yet? This is my first time with a SUV/big sized tyres, so wanted to know what inputs e.g. Dos and Don'ts - you might have given your experience with 2 SUVs. |
Hi Nils, Haven't changed a tyre yet on Admiral. However have lowered the stepney couple of times - just to get the feel. It is cumbersome to an extent as mentioned earlier.
OK now combining both the Admiral's and Guderian the Scorp's experiences (where I have changed the tyres all by myself on all the occasions of flats and other reasons):
The points mentioned below are also keeping in mind your long trip to explore the wilds:
1. If you can - try and keep a floor jack (2 or better 3 tonne capacity) in the Bison. Floor jack (hydraulic) is much easier to use than the Toyota suppled screw jack. I had a 2 tonner on the Scorp. But gave it away along with the Scorp. Dash it !
2. Ensure once in a quarter that you lower the stepney and raise it back again - both for practice and to ensure that the Tommy rod (which is a three piece contraption and is a lousy piece of work - outsourced material) is in good condition, not corroded and the fastening bolt moves well etc. Plus use the event to check the inflation level of the stepney and top up. Keep the level atleast 2 PSI above normal.
2.a. Before you start the wrestling match check whether the damage to the tyre can be spotted. Why ? If it is a minor one - go straight to point 7 under general tips.
3. When changing a flat - first remove the T-ornament of the hub using the lug wrench (has a flat screw driver like end) and loosen the lugs.
4. In order of sequence - First lower the stepney (use Tommy rod - only two pieces to be fixed) and remove stepney away from under the vehicle then place the jack to raise the vehicle.
4. The jack should be placed in the exact spot as mentioned in the Owner's Manual. Axle point at the rear and the ladder frame point at the front. Since the beast is extremely heavy - placing it elsewhere could damage other parts/body line. Use Tommy rod on jack after fixing all three pieces.
5. Remove the punctured tyre/fix stepney. As done in cars. Lightly tighten lugs in X sequence/patten. Final tightening in circular pattern. Don't forget fixing the T ornament.
Please do recheck the torque of the lugs to ensure you have tightened it. In an SUV if you drive off under a mistaken belief that you have tightened the lugs fully and it hasn't been the damage can be enormous to the wheel studs and subsequently if the wheel comes off. All because of the weight of these creatures called SUVs. Cars fare better I guess if there are such slip ups. Damage is a little minor or the shakes can be felt much faster giving you time to react and fix it before greater damage is done.
Have seen a couple instances of Scorps loosing their wheels as the lugs weren't tightened by the ASCs ! It wasn't a pretty sight.
6. Lower vehicle / remove jack. Reduce the Tommy rod to 2 pieces to use it for raising stepney.
7. Place stepney underneath, fix chain end and raise.
Wash hands and feel muscles that have developed overnight by moving the mighty R17s !
General tips:
1. Always ensure that the Tommy rod is in good condition.
2. Don't over-torque anything.
3. If you find resistance at any point at any place don't use too much of pressure or else something may give way and you could be in a deeper mess with a buggered up lug nut or splintered Tommy rod or broken lug wrench. Have had quite a few such episodes where nuts have gotten misshapen, tools splintered etc. They way around these situations esp stuck lugs is to keep a can of WD 40 and spray on the studs/nuts and then try again, when you find much of a resistance.
Also as a preventive method, anytime when you remove tyres - for rotation etc ask them to daub the studs with a little oil before fixing back the tyres and torquing the lug nuts. Works like a charm when you have to remove them. Normally the studs are rusted.
4. Keep a folding type or normal (additional) lug wrench for emergencies. Use this to undo the lugs etc and use the company supplied wrench to operate the jack and lower the stepney etc.
5. Don't over-torque the lugs after fixing the stepney - removing it later could be a pain. Ask the tyrewallah also after repairing the puncture not to over do it.
6. Keep a kit of tubeless tyre puncture repair kit in the vehicle. Not that you may have to repair it yourself (very simple though) but in many lonely outposts of our country the tyre shops may not have it.
7. Keep a digital inflator (like the one I showed earlier in the thread) in the vehicle. In case after examining the tyre damage you feel it is a minor one then just inflate and drive on to a tyre-wallah, or if lucky, tyre-wali !
8. After fixing back everything - please ensure to secure all tools and tackles. Count and recount if required. Move the vehicle ahead and survey the battlefield before driving away.
9. Keep a spare tube for emergency. In case at a point the tyre can't be repaired or there is a huge tear, patch up the tyre from the inside, place in the tube and inflate. However a tip here is that the tube size should be one inch lesser than the tyre dimensions - to prevent folding on expansion due to heat generated on running. In the case of our TForts take 2 tubes of dimensions 265/65/R16. Not R 17. This was a tip from an old Army hand ! This 'tubed approach' can help you run the tyres till you come back to namma Bengaluru and a tyrewallah/wali of your choice to get a new set.
However in this mode - please do not exceed 100 KMPH. As tubes in a tubeless tyres can generate huge amounts of heat. I ran a tubed tubeless tyre (Now how confusing can that get ! Purists of the language will now ask - Once you insert a tube into a tubeless tyre how can it be called tubeless tyre ? - oh forget it, I am 'tyred' of explaining that ! You know what I mean.) on the Scorp for almost a year and high speeds on the expressways for short bursts ! Not recommended though.
10. Keep a pair of gloves in the vehicle.
Well, these are all I can remember now - shall add to the list as time goes by...