Which pressure the pilot circuit should hold, and which wear limit retires an undercarriage part, are questions this 474-page Link-Belt LS-1600 technical manual PDF, book number 790 for the LS-series hydraulic excavator, settles for good. Hydraulic circuit diagrams for both blade and offset configurations sit in the Maintenance Standards section beside the electric circuit, while the undercarriage chapter takes the travel device, recoil spring, and track shoe through complete disassembly and reassembly. The attachment section, the largest block in the book, rebuilds every cylinder from boom to off-set and covers swing motor service. Check shoe thickness against the 4 mm (0.16 in) figure, and reject a pump shaft once oil seal lip wear passes 0.025 mm (0.001 in). Guessing here costs twice: the part, then the second teardown. Bookmarked and text-searchable, this download puts the right figure in front of you before your first bolt comes loose.
What's Inside This Link-Belt LS-1600 Manual
| System | Pages | Key Topics |
|---|---|---|
| General and Outline | 1-42 | Caution for Inspection and Maintenance, Basic Rules |
| Under Carriage | 43-116 | Travel Device, Drive Sprocket, Take-Up Roller, Upper Roller, Lower Roller, Recoil Spring, Grease Cylinder, Track Shoe |
| Upper Structure | 117-146 | Swing Device |
| Electrical System | 147-158 | Monitor System, Battery |
| Maintenance | 159-230 | Hydraulic Pump Maintenance, Hydraulic Pump, Control Valve, Pilot Valve, Manifold Valve, Stack Valve |
| Hydraulic Cylinders (Bucket, Arm, Boom, Off-Set, Blade) | 231-302 | Bucket Cylinder, Arm Cylinder, Boom Cylinder, Off-Set Cylinder, Blade Cylinder, Seal Replacement, Rod and Tube Inspection |
| Swing Motor Maintenance | 303-338 | Motor Disassembly, Reduction Gear, Brake, Maintenance Standards |
| Control Valve Maintenance | 339-356 | Spool Inspection, Relief Valve Settings, Reassembly, Maintenance Standards |
| Hydraulic Cylinder Maintenance | 357-436 | Piston and Rod Wear Limits, Seal Kits, Reassembly Torque, Maintenance Standards |
| Maintenance Standards | 437-474 | Caution for Inspection and Maintenance, Basic Rules (Handling of the Interchangeable Parts, Conversion Tables), Circuit Diagram (Hydraulic Circuit, Electric Circuit) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Shoe thickness | 4 mm (0.16 in) | p. 30 |
| Shaft contact area of oil seal lip wear amount | 0.025 mm (0.001 in) or less | p. 178 |
| Volume efficiency (1st speed) | 94% or more | p. 300 |
| Machine efficiency (1st speed) | 82% or more | p. 300 |
| Tightening torque for hex socket head bolts (M10x30 and M10x70) | 5.6 to 7 kgf-m (40.51 to 50.63 ft.lbs) | p. 469 |
| Tightening torque for relief valve | 8 to 9 kgf-m (37.86 to 65.10 ft.lbs) | p. 424 |
| Outer diameter wear limit of piston rod (55-80mm) | -0.023 mm | p. 383 |
| Inner diameter wear limit of push rod (55-75mm) | +0.03 mm | p. 29 |
| Tightening torque for Plug (Item 4, 14) | 7.0 - 8.0 kgf m (50.63 - 57.86 ft-lb) | p. 424 |
| Tightening torque for Plug (Item 6) | 9.0 - 10.0 kgf m (56.10 - 72.33 ft-lb) | p. 424 |
| Track roller (a) Service limit | 110 mm (4.33 in) | p. 446 |
| Track roller (b) Standard size | 144 mm (5.67 in) | p. 446 |
Link-Belt LS-1600 Common Problems This Manual Covers
Link-Belt LS-1600 hydraulic power weak, bucket and arm cylinders slow or stall under load
Check main relief pressure before condemning the pump; spec on page 27 is 275 to 285 kgf/cm², so adjust the relief valve if it reads low. If pressure holds and cylinders still lag, suspect pump wear: shoe thickness under 4 mm or piston-to-shoe backlash over 0.2 mm means the pump needs an overhaul.
Manual Section: Maintenance p. 27One track will not move or machine pulls hard to one side when traveling
Test the suspect travel motor before buying a final drive. Measure pressure difference across the motor; the first speed spec on page 300 is 175 kgf/cm² with volume efficiency at 94 percent or better. Below that, rebuild or replace the motor, then torque the travel motor mounting bolts to 27.2 to 31.8 kgf-m.
Manual Section: Under Carriage p. 300Swing slow and jerky, growls under load, upper will not hold position on a slope
Check the swing reduction gear oil first; capacity is 2.5 liters, listed on page 40, and a dry case chews up gears fast. Then measure swing cross over relief pressure per the test procedures at the front of the book. If a relief cartridge comes out during the work, torque it back to 8 to 9 kgf-m.
Manual Section: Upper Structure p. 40Boom or arm cylinder weeps at the rod seal, load drifts down with levers centered
Pull the cylinder and measure the rod before throwing seals at it; a scored or undersize rod kills a new seal kit in a week. Wear limit for a 55 to 80 mm rod is minus 0.023 mm on the outer diameter, shown on page 383. If the rod checks good, fit the full seal kit and inspect the piston while it is apart.
Manual Section: Attachment p. 383Pilot controls feel dead or spools stick, functions respond late or not at all
Measure pilot circuit pressure before tearing into the control valve; the setting is 38 to 42 kgf/cm², listed on page 27. Low pressure points at the pilot supply or its relief, not the spools. If pressure is in spec, check spool-to-bore fit against the 20 micron standard clearance and flush any varnish out of the valve.
Manual Section: Maintenance p. 27Tracks run loose and pop over the sprocket, rollers squeal and run hot
Measure the rollers before ordering a whole undercarriage set. Standard track roller tread is 144 mm with a service limit of 136 mm, and roller shafts are done at 38 mm, all on page 446. Adjust track tension with the grease cylinder and inspect the recoil spring while the machine is blocked up.
Manual Section: Maintenance Standards p. 446Frequently Asked Questions
What are the torque specifications for the counterweight mounting bolts?
The counterweight mounting bolts (M24) should be tightened to a torque of 75.1 to 87.7 kgf-m (543.2 to 634.3 ft-lb). p. 469
What is the procedure for releasing hydraulic oil pressure?
To release hydraulic pressure, lower the attachment to the ground, stop the engine, turn the starter key to 'ON', turn the control switch to 'ON', move the operation levers back and forth approximately 10 times, turn the starter key to 'OFF', and finally loosen the air bleeder cap on the hydraulic tank. p. 31
What is the standard oil capacity for the swing motor reduction gear case?
The standard oil capacity for the swing motor reduction gear case is 2.5 liters (0.66 gal). p. 40
What is the tightening torque for the main relief valve on the control valve?
The main relief valve assembly on the control valve should be tightened to 5 to 5.5 kgf-m (36.2 to 39.8 ft-lbs). p. 347
What is the procedure for checking the accumulator gas pressure?
To verify the accumulator gas pressure, hoist the boom, stop the engine, turn on the starter and control switches, and shift the boom operation lever from 'lowering' to 'neutral' six times. If the boom lowers three times or more, the gas pressure is sufficient. p. 32
What exactly do I receive with this Link-Belt LS-1600 Technical Manual?
This is a 474-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Can I print just the pages I need from this Link-Belt LS-1600 manual?
Yes, printing is unrestricted: a single page, a chapter, or the lot, on letter or A4.
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