Manitowoc Grove GRT880

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Sandra JacobsAug 1, 2025

What to do if no hydraulic oil flows in Manitowoc Grove GRT880 Construction Equipment?

R
Ronald MartinAug 2, 2025
If no hydraulic oil is flowing, several issues could be the cause. First, check the hydraulic oil level and inspect the system for any leaks, making necessary repairs and refilling the reservoir. Second, inspect the reservoir-to-pump suction lines for breaks or restrictions, ensuring they are clean, secure, and properly attached, repairing or replacing them as needed. Third, check the pump shaft to see if it's sheared or disengaged, repairing or replacing it if damaged. Finally, internal contamination could be the culprit; in this case, drain the system, flush it with the recommended oil mixture, and then drain and refill with the recommended hydraulic oil.

Brand	Manitowoc
Model	Grove GRT880
Category	Construction Equipment
Language	English

Brand

Manitowoc

Model

Grove GRT880

SECTION 1 INTRODUCTION

GENERAL

Provides basic information about the crane's design, components, and operation.

LIST OF SPECIFICATIONS

Details technical specifications including dimensions, capacities, engine, and major components.

Hydraulic Pumps

Information on the types, sections, and output of hydraulic pumps.

SECTION 2 SAFETY INFORMATION

SAFETY MESSAGES

Explains the use of safety alert symbols and signal words to communicate hazards.

OPERATIONAL AIDS

Describes accessories that provide information or control crane functions for safety.

Rated Capacity Limiter (RCL) Systems

Details the RCL system which monitors and prevents overload conditions.

CRANE STABILITYSTRUCTURAL STRENGTH

Provides guidance on ensuring crane stability and structural integrity during operation.

ELECTROCUTION HAZARD

Critical safety information regarding operating near electrical power lines.

PERSONNEL HANDLING

Procedures and safety requirements for lifting personnel.

COLD WEATHER OPERATION

Recommendations for operating the crane in cold and arctic temperatures.

SECTION 3 OPERATING CONTROLS AND PROCEDURES

CONTROLS AND INDICATORS

Overview of all controls and indicators within the crane cab.

CONTROL SEAT ASSEMBLY - DUAL AXIS JOYSTICKS

Details the controls and functions operated via dual-axis joysticks.

CRANE CONTROL SYSTEM (CCS)

Description of the crane's electronic control unit and system.

RATED CAPACITY LIMITER (RCL) SYSTEM

Explains the RCL system's function in monitoring and limiting crane operations.

Using Your Load Chart

Guidance on how to read and use the crane's load chart for lifting capacities.

Stowing and Parking

Procedures for safely stowing and parking the crane.

SECTION 4 SET-UP AND INSTALLATION

Hoist Platform

Instructions for preparing the hoist platform for operation.

ANTI-TWO-BLOCK (A2 B) SWITCH

Details the A2B switch function, locking, unlocking, and pre-operation checks.

CABLE REEVING

Procedures for reeving the hoist rope, including boom cable and dead-end rigging.

BI-FOLD SWINGAWAY, OFF-SETTABLE BOOM EXTENSION

Instructions for attaching, erecting, and stowing the bi-fold boom extension.

REMOVABLE COUNTERWEIGHT

Procedures for the removal and installation of the counterweight assembly.

SECTION 5 MAINTENANCE AND LUBRICATION

LUBRICANTS AND LUBRICATION INTERVALS

Guidance on selecting and applying lubricants at specified intervals.

CYLINDER ROD SURFACE PROTECTION

Recommendations for protecting cylinder rods from corrosion.

Drive Train

Maintenance and lubrication procedures for the drive train components.

Steering and Suspension

Maintenance and lubrication procedures for steering and suspension systems.

Boom

Lubrication points and procedures for the boom sections and related components.

RUST PROTECTION

Information on factory rust inhibitor treatment and owner maintenance.

Inspection and Repair

Procedures for inspecting and repairing minor damage to the crane's finish.

Manitowoc Grove GRT880

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