68
17-04-2003
01
15-01-2004
DATE
COMPILER TECO/ATI
REG. CODE
1-5302-584
MODEL N°
50871
DATE OF ISSUE
REVISION
ENDORSED
XII
145
146
143
144
SETTINGS / ADJUSTMENTS
ADJUSTMENTS - RY 50-103-110
No-load idling adjustment (standard)
After having filled the engine with oil and fuel, start it and allow it to warm
up for 10 minutes.
Using adjuster screw 1, regulate the idling rate at 1000-1250 rpm.
Tighten the check nut.
No-load top rate adjustment (standard)
After having adjusted the idling rate, use screw 2 and regulate the top
rate at 3800 rpm (for engines set at 3600 rpm on load).
Tighten the check nut.
Injection pump flow rate adjustment for RY 50-70-75-103-110
This regulation must be carried out by means of a water brake,
otherwise the adjustment will be approximate. proceed in the following
way.
Loosen flow rate limiter C by 5 turns.
Accelerate the engine to no-load top rate, i.e. to 3800 rpm.
Re-tighten limiter C until the engine tends to decelerate.
Loosen limiter C by one and a half turns.
Tighten the check nut.
Note: Tighten C if the engine produces an excessive amount of exhaust
in the maximum load condition; loosen C if no smoke is exhausted
and if the engine is unable to develop its maximum power.
Injection pump delivery limiting and torque adapter (standard)
Delivery limiting device C has the function of limiting the injection pump
max. delivery.
The same device also acts as torque adapter. The speed governor
spring acts on lever L with standing the resistance opposed by spring
M inside the cylinder.
The stroke H allowed by the torque device to lever L is 0.20 / 0.25 mm.
As a result of this pump delivery increases and torque reaces its peak
value.
Note: In generator sets and power welders, the torque setting device
acts as a delivery limiter only.
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