Manitowoc Grove GMK 4100L-1 Bedienungsanleitung

Maintenance manual

3 302 364 en

25.11.2016

3 302 364 en Maintenance manual

GMK 4100L-1

Manitowoc Crane Group Germany GmbH

Industriegelände West

D-26389 Wilhelmshaven, Germany

Tel: [+49] (0)44 21 294-0

Fax: +[49] (0) 44 21 294-301

The passing on or reproduction of this document as well as the utilisation and disclosure of its contents is prohibited unless

expressly permitted. Infringement will incur liability for compensation. All rights pertaining to registration of patent or utility

model are reserved. The original language of this document is German.

Important note

Any type of duplication or excerpt from this

document, even in electronic form, is not subject

to the revision service of

Manitowoc Crane Group Germany GmbH.

Additional pages for maintenance manual 3 302 584 en 1

GMK 4100L-1

24.04.2017

1Additional maintenance work on the main boom

Maintenance

personnel

The maintenance work on the telescoping cylinder described here (clean,

check, lubricate) can be performed by the local maintenance personnel.

Customer service

engineers

If the local maintenance personnel discover any damage then trained

customer service engineers from Manitowoc Crane Care or an authorised

GROVE dealer must be requested to perform repairs on the telescoping

cylinder and check the entire locking system; àNote – Having the telescoping

cylinder repaired, p. 1 - 9.

1.1 Maintenance plan

1.1.1 Maintenance plan M 12

M 12

Maintenance work on the SUPERSTRUCTURE:

Every twelve months / after 1 000 oper. hrs.

Main boom

– Check/lubricate the telescoping cylinder àp. 1 - 3

24.04.2017

2 3 302 584 en Additional pages for maintenance manual

GMK 4100L-1

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Additional pages for maintenance manual 3 302 584 en 3

GMK 4100L-1

24.04.2017

1.2 Main boom

1.2.1 Check/lubricate the telescoping cylinder

•Consult the Maintenance manual supplied for information on prerequisites,

and observe the safety instructions outlined in Chapter Main boom.

•Familiarise yourself with the slinging points for personal safety

equipment on the GMK 4100L-1 truck crane; àOperating manual.

Grease, Tools

–Brush.

– Feeler gauge.

Prerequisites – The truck crane must be level.

– The hook block must be unreeved.

– The main boom must be completely retracted and lowered into horizontal

position.

– A rigging mode must be created with a telescope status that satisfies the

lifting capacity table necessary for maintenance; àLifting capacity table;

Section Telescoping sequences for lubricating the main boom.

– The RCL code for the current rigging mode must be entered.

– Personal safety equipment to secure you from falling is used;

àOperating manual.

M 12

Designation GROVE part no.

PAL1 lubricant paste, 25 kg bucket 02314698

24.04.2017

4 3 302 584 en Additional pages for maintenance manual

GMK 4100L-1

Extending

•Telescope the telescopic section Ito 50% and

mechanically lock the telescopic section Iin

the basic section; àOperating manual.

•Pull out the telescoping cylinder (4) towards

the rear; àOperating manual.

•Switch the engine off and secure against

unauthorised use of the truck crane.

•Secure yourself to prevent yourself from

falling.

•Remove the lid (1) – the pressure accumula-

tor (2) and head (3) of the telescoping cylin-

der (4) are now accessible.

Checking the

pressure

accumulator

The pressure accumulator (1) is located on the

telescoping cylinder.

Filling pressure at 20 °C (68 °F) – 10 bar

(145 psi).

Tolerances:

•Have the filling pressure checked and if

necessary corrected by Manitowoc Crane

Care or an authorised GROVE dealer.

GRisk of accidents due to incorrect inspection!

The gas pressure test must be carried out only by an authorised official

inspector of pressure tanks or under his/her supervision or instructions.

Maximum value: 10 bar (145 psi)

Minimum value: 9 bar (131 psi)

Additional pages for maintenance manual 3 302 584 en 5

GMK 4100L-1

24.04.2017

Head – variants Two different variants of the head can be fitted depending on the truck crane

equipment.

•Check whether type (A) or type (B) is

installed on your truck crane.

Check/lubricate

the head

Disconnect the locking cylinder

•Pull out the pin (2) and disconnect the

locking cylinder (1) from the connecting

link (3).

This allows the connecting link (3) to be

manually moved to both end positions.

Type (A) – The connecting link (1) slides on

the head (2) on metal surfaces.

Type (B) – The connecting link (1) slides on

the head (2) over six plastic wear

pads (3).

24.04.2017

6 3 302 584 en Additional pages for maintenance manual

GMK 4100L-1

Cleaning

•Clean the head (3) with a clean cloth.

•Clean the running surfaces of the

connecting link (1) and the guides and joints

of the lever (2).

•Check all moving parts and running paths

for damage.

•Check the sensor electrical connectors for

damage.

•Manually push the connecting link (1)

multiple times to both end positions. The

movement must be soft and free. The stroke

of the connecting link must be 44 mm

(1.7 in) .

Check the tappet

•Check the tappet (1) for wear.

•Manually press the tappet (1) down against

the spring force.

•Release the tappet (1) – the spring force

must return the tappet to the end position.

The stroke of the tappet must be 8 mm

(0.3 in) .

Additional pages for maintenance manual 3 302 584 en 7

GMK 4100L-1

24.04.2017

Checking the gap dimensions

•Check the gap dimensions at measuring

points (1) and (2) using a feeler gauge (3).

If the gap dimensions are too large or too small

•Have the head repaired by Manitowoc Crane Care or an authorised

GROVE dealer; àNote – Having the telescoping cylinder repaired, p. 1 - 9.

If the gap dimensions are correct

Lubricate the head

•Lubricate the running surfaces of the

head (3), the connecting link (1) and the

guides and joints of the lever (2) using a

brush (PAL 1 lubricant paste).

•Manually push the connecting link (1)

multiple times to both end positions to

distribute the lubricant paste. The

movement must be soft and free.

Head Measuring point

(1)

Measuring point

(2)

Type (A)

1.3 mm

up to 2.2 mm

(0.05 in

to 0.08 in)

0.3 mm

up to 1.2 mm

(0.01 in

to 0.05 in)

Type (B)

0.15 mm

up to 0.25 mm

(0.006 in

to 0.010 in)

0.15 mm

up to 0.25 mm

(0.006 in

to 0.010 in)

24.04.2017

8 3 302 584 en Additional pages for maintenance manual

GMK 4100L-1

Connecting the locking cylinder

•Reconnect the locking cylinder (1) to the

connecting link (3) and fasten it with the

pin (2).

Retracting

•Secure yourself to prevent yourself from

falling.

•Fasten the lid (1).

•Start the engine.

•Retract the telescopic section Ito 0% and

mechanically lock the telescopic section Iin

the basic section; àOperating manual.

Testing the

telescoping

cylinder

•Telescope all telescopic sections into different positions one after another

to check for correct operation of the telescoping cylinder; àOperating

manual.

•You will need to put the truck crane out of service if malfunctions occur in

the telescoping system.

•Have any damage repaired immediately by Manitowoc Crane Care or an

authorised GROVE dealer.

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