Campaign - ACC Blower Motor Fuse Changed
87mercedes03TO: OUR MERCEDES-BENZ PASSENGER CAR DEALERS
DATE: March 1987 REF. NO. MBNA 54/13
SUBJECT: INSTALLING SEPARATE FUSE FOR BLOWER MOTOR INSTALLING 25 AMP SOLDER TIP FUSES MODELS 124 AND 126 M.Y. 1986
FIGURE 1 - MODEL 124:
FIGURE 2 - MODEL 126:
As of July 1986 production, the fuse for the ACC blower motor was changed from a 25A fuse in the fuse box, to a 30A fuse in an auxiliary fuse holder (arrows, Figures 1 and 2).
For an interim period, the auxiliary fuse was secured to the wiring harness with a cable strap instead of a holder.
Effective Serial Number
Model As of Chassis End No.
124
(except .193) A 292112
124 (.193) F 023505
126 269897
On any 1986 Series 124 or 126 model with a chassis number lower than those listed above, a new solder tip blower fuse must be installed during the next service visit (fuse no. 12, model 124; fuse no. 16, model 126).
Note: Vehicles having the main fuse box cover already marked with a green dot do not have to be checked or modified.
FIGURE 3:
If the lower fuse holder has receded (Figure 3), install a separate fuse holder with 30 amp fuse as described in Work Instructions 205 (Model 124) and 206 (Model 126).
FIGURE 4:
Exchange all 25A fuses with solder tip fuses (Figure 4) the same time that the blower fuse is checked. These fuses have a higher temperature range than the ones without solder tips.
Note: When installing the auxiliary fuse holder for the blower motor, all other 25A fuses including the spare fuses, must also be exchanged with solder tip fuses.
After the modification is complete, mark the main fuse box cover with a green dot.
Submit a warranty claim for parts and labor in the usual manner.
Parts Information
Part Name Part Number
25 amp. solder 001 545 75 34
tip fuse
NOTE: For part numbers for the auxiliary fuse holder see the attached W.I. 205 and/or 206.
Time Allowance
02-5423/70/80 25 amp. fuse, replace; and fuse carrier, check
0.3 hr.
(with maint. or repair work)
WORK INSTRUCTIONS
DATE: March 1987 NO. 205 GRP. 54
SUBJECT: INSTALLING SEPARATE FUSE FOR BLOWER MOTOR MODEL 124 M.Y. 1986
FIGURE 1:
1. Disconnect the negative battery cable and cover the terminal.
2. Attach bracket for auxiliary fuse box on left shock absorber tower.
3. Mount auxiliary fuse box with attached input/output wires onto bracket (arrow, Figure 1).
4. Route wires of auxiliary fuse box along the wiring harness through watertight grommet into the fuse/relay box. Secure with cable straps.
5. Remove fuse carrier from fuse/relay box and connect 4 mm pink/green wire from the auxiliary fuse having a 4.3 mm ring terminal to the input side of fuse no. 12 (along with existing 4 mm pink/green wire).
FIGURE 2:
6. Disconnect the black/green wire from the output side of fuse no. 12 and connect it to the single-pole terminal block of the parts kit (arrow, Figure 2) together with the 4 mm black/green wire with 4.3 mm ring terminal from the auxiliary fuse.
Note: Remove the no. 16 label from the auxiliary fuse wire.
7. Secure the single-pole terminal block to the wires in the fuse/relay box, with cable strap (Figure 2).
8. Install fuse carrier and connect battery.
9. Test function of blower motor.
10. Replace fuse designation card.
11. Mark the main fuse box cover with a green dot.
Parts Information
Time Allowance
02-5424/80 Additional Fuse Box for Blower Motor, Install
0.4 hr.
(after checking of fuse)
WORK INSTRUCTIONS
DATE: March 1987 NO. 206 GRP. 54
SUBJECT: INSTALLING SEPARATE FUSE FOR BLOWER MOTOR MODEL 126 M.Y. 1986
FIGURE 1:
1. Disconnect the negative battery cable and cover the terminal.
2. Attach bracket for auxiliary fuse box on left side of firewall (Figure 1).
3. Mount auxiliary fuse box with attached input/output wires onto bracket (arrow, Figure 1).
4. Route wires of auxiliary fuse box along the wiring harness through watertight grommet into the fuse/relay box. Secure with cable straps.
5. Remove fuse carrier from fuse/relay box and connect 4 mm pink/green auxiliary wire from the auxiliary fuse having a 4.3 mm ring terminal to the input side of fuse no. 16 (along with existing 4 mm pink/green wire).
FIGURE 2:
6. Disconnect the black/green wire from the output side of fuse no. 16 and connect it to the single-pole terminal block of the parts kit (arrow, Figure 2) together with the 4 mm black/green wire with 4.3 mm ring terminal from the auxiliary fuse.
Note: Remove the no. 12 label from tile auxiliary fuse wire.
7. Secure the single-pole terminal block to the wires in the fuse/relay box, with cable strap (Figure 2).
8. Install fuse carrier and connect battery.
9. Test function of blower motor.
10. Replace fuse designation card.
11. Mark the main fuse box cover with a green dot.
Parts Information
Time Allowance
02-5424/70
Additional Fuse Box for Blower Motor, install
0.4 hr.
(after checking of fuse)