How do you tighten the belts? there are 3. the one on the alternator and as well the one on the ac are loos. its a 1979 nissan/datsun 280zx. i cant find the stupid product

There is a good diagram posted in this site:

http://www.zcar.com/forum/10-70-83-tech-discussion-forum/112666-1982-280zx-n-coupe-fuse-box-diagram.html

Also try this site for manuals on this car/year:

Datsun 280ZX Repair Manual for 1979 thru 1983

Datsun 240Z 260Z 280Z 280ZX Wiring Diagrams

The brake fluid capacity of a typical automobile, including the 1979 Datsun 280ZX, is surprisingly small - only around 250ml - but more than this should be used to ensure a good flush.--------------------------------------------------------------------------------------
CARPROG FULL

Check this information for 1983 Datsun 280ZX 2.8L (click over image for zoom)...

Fig. 7: Cylinder head bolt removal sequence

Fig. 13: Head bolt torquing sequence-1970-83 models

After repair job, temporarily install and tighten the two center (right and left) cylinder head bolts to 14 ft. lbs. (18 Nm).

Install the camshaft sprocket together with the timing chain onto the camshaft. Make sure that the marks made earlier, line up. If the chain will not stretch over the sprocket, the problem lies in the tensioner. Refer to the Timing Chain removal and installation procedure for the timing procedure, if necessary.

Install the cylinder head bolts. Note that two lengths are used. Tighten the bolts in sequence.
1970-71 models:
Tighten the bolts to 33 ft. lbs. (43 Nm)
Tighten the bolts to 47 ft. lbs. (61 Nm)

1972 models:
Tighten the bolts to 47 ft. lbs. (61 Nm)
Tighten the bolts to 55 ft. lbs. (71 Nm)

1973-83 models:
Tighten the bolts to 30 ft. lbs. (39 Nm)
Tighten the bolts to 44 ft. lbs. (57 Nm)
Tighten the bolts to 54-61 ft. lbs. (70-79 Nm)

To complete the installation, reverse the removal procedures. Adjust the valves to a preliminary COLD clearance of 0.2mm for the intake and 0.25mm for the exhaust. Operate the engine until it is at normal operating temperature, retighten the head bolts (loosen them slightly and retighten to the final torque figure) and adjust the valves to the HOT clearance specifications.

Hope this helps; remember to rating this answer and leave some testimonial comment about this.

• Torque all the way around with each step.
• First step - 30 foot lbs.
  
• Second step 44 foot lbs.
  
• Third step to 54-61 foot lbs.
  

• If you have any comments please feel free to leave them here.
  
• Hope this helps and thank you for using FixYa.
  

Regards,Tony

#1 loosen the Alternator drive Belt adjusting bolt, and remove the belt. Install new belt,tighten the adjusting bolt to give you the propper belt tention. At the longest span between two polleys at the midway point press down with your thumb and you should not be able to move the belt more than 1/4 of an inch. Good Luck and have a good XMASS.

Hope this helps!

Are you over tightening the belt? If I remember correctly, you should have 1/4" belt deflection after you tighten it.

Check the factory service manual: http://www.xenons130.com/reference.html

Hope this helps!

Todd in Idaho

'69 510
'83 280ZXT
'91 300ZXTT

its not an easy job to do but you hit the nail right on the head, only way to stop the leak is try to tighten the clips first if that failes change the pipes if all fails put in some rad weld? that should stop a leak for about a year or so,it works on brand new fords!!!

Have the thermostat tested first. You can do that by observing if the fan turns on when the fan exceeds your normal running temperature. You may want to check the radiator cap it may be worn out that some steam may come out through it causing temperature to increase in the process.