AGCO Power 49 - Lubrication System

Piston, rings and pin (84 and 98 engines)
Piston ring gap (with piston fitted in cylinder):
• 1st ring (wedge shaped ring)
0.35 - 0.50 mm
• 2nd ring
0.80 - 1.00 mm
• 3rd ring
0.35 - 0.60
• Reject limit 1st and 3rd ring
1.0 mm
• Reject limit 2nd ring
1.3 mm
Maximum permissible weight difference between
pistons in same engine
25 g
Piston must be heated up to 100°C before fitting gudgeon pin.
2.1.13 Lubrication system
Lubrication system
Oil pressure at normal running temperature:
• at idling speed (min.)
1.5 bar
• at running speed (warm engine)
2.5 - 5.0 bar
Oil filter by-pass valve opens at a pressure
difference of
2 ± 0.5 bar
Oil pressure regulating valve (33, 44 and 49 engines)
• Free length of oil pressure valve spring
48.2 - 51.8 mm
• Assembly length / load of oil pressure valve
spring
28.5 mm / 89 N
Oil pressure regulating valve (66, 74, 84 and 98 engines)
• Free length of oil pressure valve spring
(identification = yellow dot)
49.3 - 50.8 mm
• Assembly length / load of oil pressure valve
spring
28.5 mm / 127 N
2. Specifications
2-16 4th Generation Engines
8370 79492