Engine Screw Threads; Lube Oil And Fuel Flow Diagrams; Engine Air System; Introduction - Carrier 69GL15-114 Operation And Service

1.5 ENGINE SCREW THREADS

All threads used on the engines are metric except the
oil drain plug which is American Standard Pipe Thread
(NPT).

1.6 LUBE OIL AND FUEL FLOW DIAGRAMS

1
5
1. Engine Block
2. Engine Block Oil Connection
3. Oil Pan
4. Oil Pressure Gauge
5. Oil Pressure Switch
Figure 1-4. Lube Oil Flow Diagram
6
2
4
3
1
1. Fuel Tank
2. Fuel Supply Line
3. Fuel Warmer
(Optional)
4. Fuel Strainer
(Optional)
5. Mechanical
Fuel Pump
Figure 1-5. Fuel System Diagram
2
3
4
8
7
5
9
10
6. Fuel Return Line
7. Primary Filter
8. Secondary Filter
9. Injector Nozzles
10. Fuel Bleed Valve
11. Injection Pump

1.7 ENGINE AIR SYSTEM

The air cleaner is put on the engine to prolong its life
and performance by preventing dirt and grit from getting
into the engine causing excessive wear on all operating
parts. However, the operator is of necessity charged with
the responsibility of giving the air cleaner equipment
regular and constant attention in accordance with the
instructions.
Clean air is supplied to the engine through the air
cleaner (see Figure 1-2). The air is necessary for
complete combustion and scavenging of the exhaust
gases. As the engine piston goes through the intake
stroke, the piston draws clean fresh air down into the
cylinder for the compression and power strokes. As the
engine goes through its exhaust stroke, the upward
movement of the piston forces the hot exhaust gases out
of the cylinders through the exhaust valves and the
exhaust manifold. If the air filter is allowed to become
dirty, the operation of the engine would be impaired.
1.8 OPERATING CONTROLS AND
INSTRUMENTS

1.8.1 Introduction

Components required for monitoring and controlling
the unit are located in the control box and control panel
(see Figure 1-3).

1.8.2 Control Panel and Related Components

(see Figure 1-3)
a. Gauges
1. Ammeter Gauge
The ammeter indicates the rate of discharge or charge
of the battery charging system composed of the battery
and battery charging alternator.
2. Oil Pressure Gauge
The gauge is located next to the control box (see
Figure 1-1). Its purpose is to observe normal operating
engine pressure. Normal oil pressure is 40 to 60 psig (3.8
to 5.2 kg/cm@).
3. Total Time Meter
This meter designates the total hours and provides an
accurate readout of accumulated engine running time.
This data can be used to establish the proper periodic
11
maintenance schedule. (Refer to section 4.1.)
b. Indicators
1. Circuit Breaker Trip Light
This indicator light (red) may be checked (unit not
running) by placing the circuit breaker (CB-1) in the off
position and at the same time moving the ignition switch
to the run position. When the circuit breakers (CB-1 for
460 vac or CB-4 for 230 vac) is in the off position, a set of
contacts close to complete a circuit to the light.
If the unit is running and the circuit breaker trips, the
light will illuminate to signal the operator of a
malfunction with the generator.
1-6