Komatsu 4D98 Series Shop Manual page 86

7. Fuel Injection System/Governor
7.1 Introduction
Zexel's products are adopted as the fuel injection pump and governor for this engine. Because
of the need of implementing the special service tools including the pump test stand, extract
from Zexel's Service Manual is summarized here to enable disassembly, inspection and main-
tenance in an emergency.
The portions not described in this manual, therefore, should not be disassembled and ad-
justed.
When detailed adjustment is needed, contact Zexel and ask their service.
7.2 Fuel Injection Pump
(1) Fuel system diagram
.7-
-?
___/---J
c
-- ---___
[Fuel injection valve1
AX
1
c
1
1
-Fuel
tan
7-l