54
Timing cover and sprocket
General
The drive pulleys are installed on the camshaft (A1)
and the fuel injection pump (A2). These pulleys are
driven by a toothed belt (A3) from one toothed pul-
ley mounted on the crankshaft (A4). The pulleys are
made of sintered iron with 2% copper and the belt is
made of neoprene and glass fibre. A flat idler pulley
(A5) ensures good belt position and an adjustable
tension pulley controls the belt tension.
The pulley for the fuel injection pump has two key
grooves, one for turbo charged engines and the oth-
er for naturally aspirated engines.
The pulleys and belt are covered by a timing cover
and a cap which is made of fibreglass reinforced
polypropylene.
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