Lull 6K Service Manual - Manual (Page 75)

General Maintenance
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K 3-7
• Lubricate all grease fittings with the specified grease.
Hydraulic Oil
Hydraulic oil selected for use with JLG forklifts should be a premium
quality anti-wear hydraulic oil. Characteristics of the oil selected should
include:
• Viscosity: Maximum at cold start temperature — 6000 SUS
Minimum at high temperature operation — 50 SUS
• Viscosity Index: Minimum — 100
Optimum — Greater than 200
• Oxidation inhibited
• Rust inhibited
• Anti-wear additive
• Anti-foam additive
• Seal conditioning (compatible with Buna-N).
JLG recommends Amoco Rykon MV or its equivalent.
Your best assurance of selecting a quality product is the assistance that
can be obtained from a fluid supplier. Most of the major oil companies are
capable of providing suitable products if you provide them with the
specifications above.
Care and Cleaning
Wash the machine regularly. A clean well-maintained machine helps
prevent safety hazards and makes problem areas more recognizable.
Remove all items that do not belong on the machine. Secure all loose
items such as lunch boxes, tools, and additional equipment.
Cleaning Exterior Surfaces
• High pressure water or steam may be used to clean the exterior. Give
extra attention to the underside.
• DO NOT damage or wash off decals when using high pressure water
or steam. See “Cleaning Decals” below.
• Clean the mirror carefully.
• DO NOT allow mud or snow to accumulate on engine or transmission.
• Make sure radiator and transmission oil cooler fins are clean.
• Commercial engine degreasers may be used to clean the engine and
transmission. Follow the product instructions closely.
• NEVER spray water or cleaner on a hot engine or transmission, espe-
cially on a hot turbocharger.
• Commercial general purpose degreasers and detergents may be used
to help clean thick deposits. Do not use chemicals that can damage
paint or decals.