[Exclusive] VOLVO B9R Multiaxle - 9400 Voith Retarder 120 - Oil Seal Replacement - Part 1
A retarder is a device used to augment or replace some of the functions of primary friction - based braking systems, usually heavy vehicles.
Friction-based braking systems are susceptible to "brake fade" when used extensively for continuous periods, which can be dangerous if braking performance drops below what is required to stop the vehicle - for instance if a truck or bus is descending on a long decline. For this reason, such heavy vehicles are frequently fitted with a supplementary system that is not friction based.
Retarders serve to slow vehicles, or maintain a steady speed on declines, and help prevent the vehicle from "running away" by accelerating down the decline. They are not usually capable of bringing vehicles to a standstill, as their effectiveness diminishes as vehicle speed lowers. They are usually used as a additional "assistance" to slow down the vehicles, with the final braking done by a conventional friction braking system. As the friction brake will be used less, particularly at higher speeds, their service life is increased.
Here is a YouTube video of a Voith Retarder showing its working as an animation
I visited NWKRTC Belgaum Depot 1, where in i was called by VOLVO in charge, Mr Liyaqat Ali Hosur to witness and study the oil seal replacement of a VOLVO B9R Multiaxle Retarder.
Here are some pics that i clicked during this interesting and educational activity of Oil Seal Replacement of a Voith - 120 Turbo Retarder of a VOLVO B9R Multiaxle
VOLVO B9R MULTIAXLE INDIA : VOITH - 120 TURBO RETARDER
VOLVO B9R MULTIAXLE INDIA : VOITH - 120 TURBO RETARDER
VOLVO B9R MULTIAXLE INDIA : VOITH - 120 TURBO RETARDER
VOLVO B9R MULTIAXLE INDIA : VOITH - 120 TURBO RETARDER
VOLVO B9R MULTIAXLE INDIA : VOITH - 120 TURBO RETARDER
VOLVO B9R MULTIAXLE INDIA : VOITH - 120 TURBO RETARDER
VOLVO B9R MULTIAXLE INDIA : VOITH - 120 TURBO RETARDER
VOLVO B9R MULTIAXLE INDIA : VOITH - 120 TURBO RETARDER
VOLVO B9R MULTIAXLE INDIA : VOITH - 120 TURBO RETARDER
VOLVO B9R MULTIAXLE INDIA : VOITH - 120 TURBO RETARDER
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