pgrbff Posted December 9, 2020 Share Posted December 9, 2020 Since I bought my 96 300Tdi the wipers have been dismal. More than 3 flakes of snow per hour and they grind to a halt. Is this normal or are they worn motors. Always had issues with the self park too. Quote Link to comment Share on other sites More sharing options...
Snagger Posted December 9, 2020 Share Posted December 9, 2020 The system isn’t great, but yours sounds especially bad. A weak motor can be a problem, but it’s more likely the cumulative friction in the system. The motor has an integrated gear box in which the grease can dry out, the steel cable with helical “spring” around it which can bind on the guide tubes inside the dash (especially if they have been dented, are corroded or misaligned), there is the friction inside the spindle boxes that pass through the bulkhead (how many people ever oil those?) and then the wiper blade on the screen. The first things to try are giving the screen a good was and polish (not bodywork polish!) and oiling the spindles, which can be done best by removing the arms, peeling back the rubber boots and applying light oil to the shaft where it meets the guide tube while the system is switched on. Just keep adding a couple of drops every 30 seconds for three or four repeats each. It might also be worth replacing the wiper blades if they’re tired. If that doesn’t work, then you need to remove the motor and open up the inspection panel to grease the gears. We can guide you through that if it is necessary, but try the bits above first. Quote Link to comment Share on other sites More sharing options...
pgrbff Posted December 9, 2020 Author Share Posted December 9, 2020 Thank you. I'm going to have to do something because they have now stopped altogether. Quote Link to comment Share on other sites More sharing options...
Snagger Posted December 9, 2020 Share Posted December 9, 2020 The thought also occurs that it could be a problem with the electrical power. If you have a voltmeter, check the voltage at the motor feed with it running to see if it’s getting enough power - a broken or corroded connection, wire or switch could cause a voltage drop, and the earth wire and junction is worth a close look. Quote Link to comment Share on other sites More sharing options...
cackshifter Posted December 9, 2020 Share Posted December 9, 2020 If the motor is weak, one cause is worn brushes (gosh,built in '96 and already they have worn out); the brushes are available separately and are quite easy to replace, cheaper than a new motor anyway. Link oh and don't do what I once did and overgrease the cable - the motor could hardly move the cable without the wiper arms on. I use a PTFE grease, quite thin now. It can also be a corroded self park switch losing voltage, again available from SVC Quote Link to comment Share on other sites More sharing options...
pgrbff Posted December 28, 2020 Author Share Posted December 28, 2020 Before I order some new arms, are all the hook type the same? PRC4276 Quote Link to comment Share on other sites More sharing options...
Lightning Posted January 1, 2021 Share Posted January 1, 2021 Check the spindles aren't seized, one was seized on our TD5 Defender and it made the wipers slow with little power. The water seals on the spindles are rubbish, water gets in and causes them to seize up. The drive mechanism can fill with water and then in freezing weather they don't work at all (This happened on ours) The spindles can be replaced fairly easily although it takes a fair bit of dash dismantling to do the driver side one. Always use genuine Land Rover spindles. Quote Link to comment Share on other sites More sharing options...
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