Komatsu 830E-AC Shop Manual page 224

Relay Board 6 (RB6)
The following relays are installed on RB6:
Backup Lights & Horn Relay (K1)
Engine Run/Ignition Relay (K2)
Spare Relay (K3)
Spare Relay (K4)
Ether Start Relay (K5)
5 Minute Idle System (K6)
5 Minute Idle System (K7)
5 Minute Idle System (K8)
Relay Board 7 (RB7)
The following relays are installed on RB7:
Starter Motor Failure #2 Relay (K1)
Starter Motor Failure Relay (K2)
Starter Motor Failure Relay (K3)
Starter Motor Failure #1 Relay (K4)
Auto Lube Solenoid Relay (K5)
Spare Relay (K6)
Bleeddown Relay (K7)
Auto Lube Power Relay (K8)
Relay Board 8 (RB8)
The following relays are installed on RB8:
Full Load Signal to PSC Relay (K1)
70% Load Signal to PSC Relay (K2)
Spare or Shutter Relay (K3)
Load Light Power Relay (K4)
Spare or Shutter Relay (K5)
Full Load RED Light (K6)
Partial Load Yellow Light (K7)
Empty Green Light (K8)
D3-14
Relay Board 9 (RB9)
The following relays are installed on RB7:
24VDC Electrical System Components
FIGURE 3-7. AUXILIARY RELAY BOARD -
RB6, RB7, RB8
1. Circuit Board
2. Mounting Rail
3. Screw
4. Nut
Spare Relay (K1)
Spare Relay (K2)
Spare Relay (K3)
Park Brake Off Relay (K4)
Start Fail (K5)
Engine Start Relay (K6)
Start Lockout Relay (K7)
Engine Start Relay (K8)
5. Mounting Plate
6. Foam Block
7. Relay
10/06 D03036