Photos & page by Anthony Hyde
First release June 2009, Updated July 2011
Volvo's from 240's onwards use a Rack &
Pinion steering system. Most are hydraulic 'power steer' but in the
70 to early 80's manual steering racks were common. In a lot of world
markets, power steering was an Optional extra, much like air
cast into racks is the ultimate
identification ZF Zahnradfabrik
buys CAM GEARS Ltd
sometime in the mid 1980s
CAM GEARS symbol cast into racks is the ultimate identification
Gear, a UK
manufacturer made 'rack and
pinion' steering racks for Volvo 240s & other Volvo odels. The
steering information below applies to the 240.
Volvo 140 uses a completely different steering system, manual steer being 'worm & roller', & Pwr steer 'ball nut' type.
For simplicity I'll term the evolution CG1, CG2 onwards.
* CG1 - Cast iron, approx. 1975-77. Very heavy.
* CG2 - Half cast iron and half aluminium alloy. From approx 1978-81. Weight = 8.5 kg
- Aluminium alloy with steel
tube sleeve approx. 1982-86
TRW buys Cam Gears Ltd
* TRW - Aluminium alloy with steel sleeve over centre tube, 1988 onward. Weight = 6 kg
Although production of the 240 ended in 1993, spare parts production continued. The newest 240 rack I have seen is TRW 1996, bought through the Volvo Dealer exchange system. A system where your old rack was replaced with a brand new one - new from one tie rod end to the other. For the 240, this exchange scheme has now ceased.
Note: All pics below are right hand steer versions (UK, Australia, NZ, Japan, South Africa)
CLICK to Enlarge
CG2 - CamGear symbol very evident - 1979 era
TRW - note small TRW symbol opposite one of the banjo hose bolts
Quality Cast Alloy rack with steel tube sleeve is found from year 1988 onwards.
Pic shows a late 1996 version.
The round casting at the front holds a black plastic locking plug for pre-tensioning the piston (rather than shims on CamGear versions 1-3), and at the bottom a pressed steel dome seals the shaft axial end.
Link to 240 Camgear Parts Identification
CLICK to Enlarge
ZF Type 1 (80 242GT) 3.5 turns lock to lock, 2.5 possible
ZF Pics courtesy of Mike Mueller (USA)
ZF Zahnradfabrik Friedrichshafen AG
Type 1 = 7840955103 on tag above Type 2 = n/a Type 3 = 7832955106
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Updated 7/2011 AH