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[CHECKING AFTER STARTING ENGINE] 

Check the following in this section after starting the engine and before starting the first work every day. 

CAUTION 

The checkups described in this section should be carried out after starting the machine. 
Refer to "Starting the Engine in the MC-174C Operation Manual page 3-54" and later to execute 
the engine startup, traveling operations, outrigger operations and crane operations.  

 

[1] CHECKING FUNCTIONS OF BOOM 

 

At the performance of function check for boom, ensure the safety so that hook and boom do not 
interfere with any personnel or object. 

 

1. Check abnormal noise from boom and searcher hook during 

crane operation.   

 

2. Operate crane without load and check each bolt so that no one 

is missing or loose. 

 

3. Check hook for deformation, abnormal noise from bearing and 

correct function of wire rope latch (1).   

 

[2] CHECKING MOMENT LIMITER FOR OPERATION (SEARCHER HOOK MODE) 

 

If you find any abnormality with the moment limiter, immediately contact us or our sales service 
agency.  

 

1. Turn the starter switch to the “ON” position. 

2. Check with the working status lamp. The red of the lamp lights up for 2 seconds and then the green 

lights up. 

3. Check the moment limiter display unit. 

Verify that no error codes are displayed on the “RATED TOTAL LOAD” display. 

4. Shift the fall mode selector switch on moment limiter display unit to ”Searcher hook mode” (all LED 

ON).  

5. Start the engine and operate the crane as follows to verify that the moment limiter properly displays 

the value. 

Crane Operation and Displayed Parameter 

Value Displayed on 

 Moment Limiter 

Displayed “boom length” with the boom length at minimum 

1.8 m 

Displayed “boom length” with the boom length at maximum 

5.5 m 

Displayed “working radius” with the boom length of “2.9 m” and boom angle of 
“55.5 °“ 

1.5 ± 0.1 m 

Displayed “ACTUAL LOAD” when the weight of the known weight was hoisted

Must be equal to the total weight of  lifting ring 
Note that it may show some errors depending on the boom conditions.

 

Actual load 

6. Operate the crane until the moment limiter display indicates the boom length is "2.9 m" (booms (1) + 

(2)) and boom angle is "55.5 degrees", then measure the "boom angle" and "working radius.  

If the measured value(s) differ from the moment limiter display value, contact MAEDA or MAEDA  

sales agency. 

Содержание MC174

Страница 1: ...OOK www hird co uk DISCLAIMER ALL INSTRUCTIONS ARE SUPPLIED FROM MANUFACTURER AND WHERE CORRECT AT TIME OF PRINT Northern Head Office Tel 44 0 1482 227333 Western Tel 44 0 1384 900388 Southern Tel 44...

Страница 2: ...R DISPLAY UNIT 7 6 OPERATION 9 7 INSPECTION AND MAINTENANCE 11 7 1 LEGAL INSPECTION 11 7 2 CONSUMABLES 11 7 3 INSPECTION AND MAINTENANCE LIST 11 7 4 MAINTENANCE PROCEDURES 12 7 4 1 INSPECTION BEFORE O...

Страница 3: ...this machine Save this manual at a designated place for reference when necessary All personnel who work on this machine are to carry out periodic reference Only those who have thorough understanding o...

Страница 4: ...st be observed for the sake of the machine and what will be of help CAUTION This denotes that failure to handle the machine properly may damage the machine or shorten its life NOTES This denotes helpf...

Страница 5: ...3 3 Safety Decal Locations...

Страница 6: ...4 102 4608500 101 4608700 101 3327300 101 4609300...

Страница 7: ...5 4 Searcher Hook Each Section 6 1 Hook 2 E Boom 3 Bracket 4 Position pin 5 Snap pin 6 Hex head bolt 7 High tension washer 8 Hex head nut...

Страница 8: ...6 6 9 Moment limiter Display unit 10 Boom lift bypass switch...

Страница 9: ...per limit switch 13 Working radius display 14 Boom angle upper limit LED Red 15 Boom angle upper limit switch 16 Outrigger MIN extension LED Orange 17 Outrigger MID extension LED Orange Not in use MC...

Страница 10: ...en the overload is near happening and thus may result in crane damage or the machine tripping over and may result in a serious accident Use this switch to change the number of wire falls Keep pressing...

Страница 11: ...the wire falls selector switch on moment limiter display unit to Searcher hook mode all LED ON Fall mode must be set as Searcher hook mode when operating searcher hook Using searcher hook other than i...

Страница 12: ...the same time After the work release the switch and it automatically turns off The boom lift bypass switch is to be used only when in searcher hook mode The boom lift function is stopped automaticall...

Страница 13: ...roduce economical use of this machine Always replace to our genuine item Check parts catalog for correct part number for parts request CONSUMABLES LIST Part Replacement cycle Searcher hook fix bolt M1...

Страница 14: ...eakage of bolt cause searcher hook to fall off Check if there is crack damage or squash on screw thread on screw part of bolt If crack damage or squash on screw thread is found change the bolt to new...

Страница 15: ...he ON position 2 Check with the working status lamp The red of the lamp lights up for 2 seconds and then the green lights up 3 Check the moment limiter display unit Verify that no error codes are disp...

Страница 16: ...Range and Rated Total Load When using the searcher hook be sure to set searcher hook mode for moment limiter Never use the searcher hook and the crane hook simultaneously 8 1 Working Range Diagram for...

Страница 17: ...50 5 17 50 1 This Rated Total Load Chart shows maximum allowable capacities These rated total loads are based on the machine standing level on a firm ground supporting surface under ideal job conditio...

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