Tim­ing belts: the dos and don’ts

Motor Equipment News - - NEWS -

Bosch’s tech­ni­cal train­ing team pro­vides in­struc­tion on some of the most com­plex of en­gine sys­tems, but they still find them­selves an­swer­ing ques­tions on the hum­ble tim­ing belt. We ask a Bosch tech­ni­cian for some ad­vice on the ba­sics of tim­ing belts.

As one of Bosch’s most ex­pe­ri­enced tech­ni­cal train­ers, Dar­ren Todd has a long ex­pe­ri­ence work­ing with work­shops. How­ever, he still shakes his head when he sees short­cuts taken with tim­ing belts.

“I have seen some pretty hor­ri­ble fit­ments, nor­mally in an ef­fort to save time and money, but you sim­ply can’t af­ford to gam­ble on a tim­ing belt”, he said.

Most me­chan­ics un­der­stand the cat­a­strophic con­se­quences of a tim­ing belt fail­ure, but as work­shops come un­der in­creas­ing cost pres­sures, there is a temp­ta­tion to use cheaper belts, or shorten the time taken to fit the belt.

“Such mea­sures are coun­ter­pro­duc­tive”, says Todd, “as fail­ure will cost a work­shop owner both a nasty re­pair bill, and the rep­u­ta­tion of their busi­ness.”

To as­sist work­shops, we asked Dar­ren to list five dos and don’ts of tim­ing belt fit­ment. Don’t force the belt into place. Us­ing screw­drivers or any other ob­ject to lever the belt into place can cause dam­age to both the belt and the pul­leys. Do check all of the tim­ing com­po­nents and re­place them if nec­es­sary. If there are any signs of wear on any of the com­po­nents, re­place all of them – it will save time and money in the long run. Bosch has a range of tim­ing belt kits avail­able that in­clude ev­ery­thing re­quired for a full re­place­ment. Don’t bend or crimp the belts. Tim­ing belts have in­ter­nal ten­sile cords that can be bro­ken if the belts are bent be­yond their tol­er­ances. The dam­age may not be ev­i­dent on the ex­te­rior, but the life of the belt will be sig­nif­i­cantly re­duced. Do be aware that not all en­gines are the same. As en­gines be­come in­creas­ingly more com­plex, tim­ing belts are more dif­fi­cult to re­place. Some man­u­fac­tur­ers even re­quire spe­cial tools to aid in the fit­ting of a belt. If in doubt, con­sult a source such as Bosch’s ESI [tronic] which pro­vides de­tailed in­struc­tions. Don’t use in­fe­rior qual­ity belts. Sourc­ing cheap belts is easy these days, but it will cost you in the long run. Al­ways in­sist on a qual­ity brand such as Bosch, which you know has been man­u­fac­tured and tested to meet the high­est qual­ity stan­dards. The above in­for­ma­tion may seem ba­sic to an ex­pe­ri­enced tech­ni­cian, but in a com­plex en­vi­ron­ment it is of­ten the ba­sic things that are over­looked. Make your job eas­ier by re­mem­ber­ing the ba­sics and al­ways in­sist on qual­ity.

Bosch tim­ing belts are man­u­fac­tured to orig­i­nal equip­ment spec­i­fi­ca­tions and are backed by the tech­ni­cal ex­per­tise of the world’s leading au­to­mo­tive com­po­nents sup­plier.

For more in­for­ma­tion on Bosch tim­ing belts, visit www.bosch.com.au.

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