Tony Posted September 24, 2009 Report Share Posted September 24, 2009 How long have i been campaigning about the Merc pulling problem and the solution!!..... Well now they are using it. ............................................................... Topic number GI40.20-P-003702 Version 2 Group number 40.20 Chassis alignment check Date 06-20-2006 Validity MODEL 203.### (except 203.08 /28) 2# MODEL 211.### (except 211.08/28) 2# MODEL 230.### 2# Reason for change Damage type revised Complaint Vehicle follows road inclination to the left too quickly Cause The vehicle follows the inclination of the road due to the laws of physics! - Low friction (opposing force) in the axle joints and in the steering/jacket tube area (conveys a good road feel and leads to good self-centering) - Wide base tires increase roll and sensitivity to ruts in the road. If this is the only reason for complaint, there is no remedy. Remedy 1 Test drive vehicle (team chief/customer) and verify complaint. To ensure neutral evaluation, it is necessary to make a visual check to ensure that the tire inflation pressure and vehicle level are OK (vehicles with pneumatic suspension/ABC not inclined to one side). 2 Determine influence of tires. AP40.10-P-4050Z Swap wheels diagonally left/right on front and rear axles (including unidirectional tires). If this does not remedy the problem, continue with step 4. If the vehicle is OK after changing the wheels crossways, non-unidirectional tires can remain on the vehicle. For unidirectional tires: 3 Optimize bead seating. Press tire off rim and fill as described in AF. AF40.10-P-3201-01AV (damage code 40221B5 or alternatively 40211B5) 4 Check axle alignment. If the vehicle is still not OK with symmetrical axle alignment (actual value) despite diagonally swapping the wheels: 5 Change caster as follows: Model 203 AR40.20-P-0200P Model 211 AR40.20-P-0200T Model 230 AR40.20-P-0200R Left: Increase caster, increase camber (in negative direction). Right: Reduce caster, reduce camber (in positive direction) Use camber and caster correction bolts. Model 203 AR40.20-P-0322-01P Model 211 AR40.20-P-0322-01T Model 230 AR40.20-P-0322-01R 6 Perform road test (final assessment). Operation no. of operation texts or standard texts and flat rates Category Op. no. Operation text Time Acc. no. Code P 401450 Remove/install wheels (all) 007 WU --- --- P 023789 Optimize bead seating on 4 unidirectional tires 006 WU --- --- P 402070 Stationary balancing of wheels (4) (wheels removed), models 203, 211 004 WU --- --- P 402070 Stationary balancing of wheels (4) (wheels removed), model 230 006 WU --- --- P 402181 In addition to balancing wheel: Attach adhesive weights to disk wheel Time prescribed by foreperson --- --- P 406560 Check vehicle alignment (electronically/with adjustment operations), model 230 015 WU --- --- P 406716 In addition to alignment check: Adjust camber/caster on left front axle half, models 211, 230 008 WU --- --- P 406717 In addition to alignment check: Adjust camber/caster on right front axle half, models 211, 230 008 WU --- --- P 406560 Check vehicle alignment (electronically/with adjustment operations), models 203, 211 012 WU --- --- P 406716 In addition to alignment check: Adjust camber/caster on left front axle half, model 203 010 WU --- --- P 406717 In addition to alignment check: Adjust camber/caster on right front axle half, model 203 010 WU --- --- WIS references Document number Title Note Allocation AP40.10-P-4050ZWIS ReferenzRemedyAF40.10-P-3201-01AVWIS ReferenzRemedyAR40.20-P-0200PWIS ReferenzRemedyAR40.20-P-0200TWIS ReferenzRemedyAR40.20-P-0200RWIS ReferenzRemedyAR40.20-P-0322-01PWIS ReferenzRemedyAR40.20-P-0322-01TWIS ReferenzRemedyAR40.20-P-0322-01RWIS ReferenzRemedy Symptoms Symptom Chassis / suspension / Suspension characteristic / pulls to the left These refer to WIS documents for the repair Quote Link to comment Share on other sites More sharing options...
Rich Posted September 24, 2009 Report Share Posted September 24, 2009 No mention of WIM there...shame they take the credit! Quote Link to comment Share on other sites More sharing options...
Tony Posted September 24, 2009 Author Report Share Posted September 24, 2009 No mention of WIM there...shame they take the credit! I put my name to it because of the method/ sequence there using but in truth i don't know where this came from? Quote Link to comment Share on other sites More sharing options...
CIH Posted September 24, 2009 Report Share Posted September 24, 2009 what's that about bead seating ? Quote Link to comment Share on other sites More sharing options...
Tony Posted September 24, 2009 Author Report Share Posted September 24, 2009 what's that about bead seating ? No idea mate..... I think it's to ensure the rotation is not influenced by a poorly seated bead? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.