NLB 1012D - Repair Overview;High Pressure Water Jetting Unit Repairs; Table of Contents

Revision 11
TABLE OF CONTENTS
SECTION
8
REPAIR
DESCRIPTION PAGE NUMBER
Table of Contents ............................................... 8-1
I. Repair Overview ................................................ 8-2
A. Safety ..................................................... 8-2
1. General Safety Precautions for Service Personnel ................ 8-2
2. Specific Safety Precautions for Service Personnel ................ 8-3
B. Suggested Standard Shop Practices .............................. 8-4
1. Repair Procedures ......................................... 8-5
2. Repair Tips .............................................. 8-5
II. High Pressure Water Jetting Unit Repairs ............................ 8- 7
A. High Pressure Pump .......................................... 8- 7
1. Fluid End ............................................... 8- 7
a. Plunger Packing and Stuffing Boxes ....................... 8- 7
b. Suction and Discharge Manifolds and Valve
Assemblies ........ 8-18
c. Fluid Cylinder ......................................... 8-25
2. Power End ............................................... 8-28
B. *BVl0-650 By-Pass Valve .................................... 8-38
C. *BVl0-400 By-Pass Valve .................................... 8-49
D. *BV20-260 By-Pass Valve .................................... 8-57
E. NSP 2000 Rupture Disc Valve Assembly .......................... 8-65
F. NSP 3000 Rupture Disc Valve Assembly .......................... 8-67
G. L -5Si v1l Plunger Lubricator . . . . . . . ............................ 8-69
H. V-belt ..................................................... 8- 73
I.
4071-10 Throttle Contol ....................................... 8- 76
1. Seal and Piston Replacement ................................ 8- 76
J.
4071-20 Throttle Contol ....................................... 8-78
1. Seal and Piston Replacement ................................ 8- 78
III. Electrical
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-80
A. Electrical Diagram - CUMMINS Diesel Engine .................... 8-80
B. Electrical Diagram - JOHN DEERE Diesel Engine ................. 8-82
*:To check which by-pass valve is on your unit, refer to page 3-3.
© Copyright June, 2005 NLB Corporation
8-1