Handbrake adjustment: some notes & a constructive bodge
Posted: Wed Jun 05, 2013 1:06 pm
I hope these notes will be helpful to some. They are by way of being a humble pendant to Jasper5's tutorial on handbrake adjustment (Knowledge Base section).
1. The adjuster at the base of the handbrake lever, shown in Jasper's first picture, is not always present. On my 1997 1.9TD there was only a hexagonal brass block which was soldered directly onto the cable end and did not turn. (Possibly the adjustment facility was introduced only on later cars.)
2. Moving to the rear end: - On drum brakes, the toothed adjuster is very similar to the disc-brake version shown in Jasper's fifth image, but it is mounted horizontally at the top of the assembly, between the ends of the shoes; there is a sort of black plastic shield in front of it, with a rectangular hole through which one can reach the teeth. (These so-called automatic adjusters may have long since given up their jobs. Mine needed two complete turns before the shoe clearance was brought down to a reasonable level; no wonder the handbrake had been non-existent!) You have to remove the drum (held by two star-head screws) in order to get at the adjuster, and setting it is a tedious matter of trial and error, moving the adjuster a few teeth at a time and then re-fitting the drum to test the result. I think I had to remove and replace the drum eight times.
3. As Jasper implies, the central adjuster - the one in Jasper's second image, above the exhaust pipe and usually hidden by a heat-shield - can degenerate into a useless mass of rust, and this was certainly true of mine; adjuster-nut, locknut and threads were all fused together into one shapeless lump. However, I found that there was a rough-and-ready way of taking up lost motion in the cable without resorting to the adjuster. I hope the drawings below will be clear enough.
Fig. 1 shows the yoke (if that is the right term), marked A, which connects the front cable (B) to the right-hand cable (C); it will be found just forward of the spare-wheel well (D) and about an inch to the right of the edge of the heat-shield. I found that there was free play of about 3mm between this yoke and the end of C. With the handbrake released, it is easy enough to pull A outward, towards the right-hand side of the car, and then unhook cable C from it; the yoke can then be swung aside and slid back from the end of B (fig. 2). Having got this far, I took a brass nut about 2mm thick, 5mm across (i.e. similar in diameter to the blocks at the ends of the cables), with a central hole more or less the same diameter as the cables themselves. I filed away one side of this nut to create a C-shaped spacer (fig. 3) and pushed it over the end of cable B so that it butted up against the block (fig. 4). After re-connecting everything, I found that I had reduced the travel of the brake lever by two clicks.
I do not know whether this approach would ever have resulted in MoT-acceptable braking, but it certainly brought my handbrake back from the dead and made the car usable again for the few months that remained before the clutch died (which is another story).
Oliver Mundy.
1. The adjuster at the base of the handbrake lever, shown in Jasper's first picture, is not always present. On my 1997 1.9TD there was only a hexagonal brass block which was soldered directly onto the cable end and did not turn. (Possibly the adjustment facility was introduced only on later cars.)
2. Moving to the rear end: - On drum brakes, the toothed adjuster is very similar to the disc-brake version shown in Jasper's fifth image, but it is mounted horizontally at the top of the assembly, between the ends of the shoes; there is a sort of black plastic shield in front of it, with a rectangular hole through which one can reach the teeth. (These so-called automatic adjusters may have long since given up their jobs. Mine needed two complete turns before the shoe clearance was brought down to a reasonable level; no wonder the handbrake had been non-existent!) You have to remove the drum (held by two star-head screws) in order to get at the adjuster, and setting it is a tedious matter of trial and error, moving the adjuster a few teeth at a time and then re-fitting the drum to test the result. I think I had to remove and replace the drum eight times.
3. As Jasper implies, the central adjuster - the one in Jasper's second image, above the exhaust pipe and usually hidden by a heat-shield - can degenerate into a useless mass of rust, and this was certainly true of mine; adjuster-nut, locknut and threads were all fused together into one shapeless lump. However, I found that there was a rough-and-ready way of taking up lost motion in the cable without resorting to the adjuster. I hope the drawings below will be clear enough.
Fig. 1 shows the yoke (if that is the right term), marked A, which connects the front cable (B) to the right-hand cable (C); it will be found just forward of the spare-wheel well (D) and about an inch to the right of the edge of the heat-shield. I found that there was free play of about 3mm between this yoke and the end of C. With the handbrake released, it is easy enough to pull A outward, towards the right-hand side of the car, and then unhook cable C from it; the yoke can then be swung aside and slid back from the end of B (fig. 2). Having got this far, I took a brass nut about 2mm thick, 5mm across (i.e. similar in diameter to the blocks at the ends of the cables), with a central hole more or less the same diameter as the cables themselves. I filed away one side of this nut to create a C-shaped spacer (fig. 3) and pushed it over the end of cable B so that it butted up against the block (fig. 4). After re-connecting everything, I found that I had reduced the travel of the brake lever by two clicks.
I do not know whether this approach would ever have resulted in MoT-acceptable braking, but it certainly brought my handbrake back from the dead and made the car usable again for the few months that remained before the clutch died (which is another story).
Oliver Mundy.