Aan die een kant: herstel; maar aan die ander kant: vervang.

Yes. Aan die een kant ... aan die ander kant is the standard Afrikaans pattern for contrasting two sides of an issue.

Literally:

• aan = on / at
• die = the
• een = one
• kant = side

So it is very close to English on the one side ... on the other side, but idiomatically it means on the one hand ... on the other hand.

Because both halves are parallel:

• aan die een kant
• aan die ander kant

Afrikaans usually keeps the full expression in both parts of the contrast. This sounds natural and balanced, just like English repeats on the in on the one hand ... on the other hand.

Maar means but. It strengthens the contrast between the two sides:

• Aan die een kant: herstel; maar aan die ander kant: vervang.

Without maar, the sentence would still make sense, but it would feel a bit more like two balanced labels and a little less explicitly contrastive. With maar, the opposition is clearer.

Yes, they are normally verbs:

• herstel = repair
• vervang = replace

In this sentence, they are being used in a very compressed, headline-like way. The full idea might be something like:

• Aan die een kant moet ons dit herstel; maar aan die ander kant moet ons dit vervang.

So the sentence as given is elliptical: some words are left out because the contrast is the main point.

Because this is not written as a full ordinary sentence. It is more like a summary, note, heading, or decision contrast.

Afrikaans often allows this kind of shortened style, especially in:

• notes
• presentations
• headings
• arguments laid out in point form

So instead of a full sentence, you get two short idea-labels:

• herstel
• vervang

The punctuation shows that this is a structured contrast rather than a flowing full sentence.

• The colon introduces the key idea for each side.
• The semicolon separates the two larger contrasting parts.

So the punctuation visually organizes the sentence like this:

• one side: herstel
• other side: vervang

This is quite natural in formal writing, notes, or analytical contexts.

Yes. A more standard running version could be:

Aan die een kant herstel ons dit, maar aan die ander kant vervang ons dit.

Or, if you want to keep it short:

Aan die een kant herstel; aan die ander kant vervang.

The original version is especially good when you want a neat, contrastive, almost list-like style.

The basic distinction is:

• herstel = fix something so the same item continues to be used
• vervang = remove it and put something else in its place

So if a machine is broken:

• herstel means you repair the machine
• vervang means you replace the machine or the broken part

This is very similar to English repair versus replace.

Ander means other. So:

• die een kant = the one side
• die ander kant = the other side

This pairing is very common in Afrikaans. It works much like English one ... the other.

It is the same word as the number one, but here it functions as part of a fixed contrast:

• die een
• die ander

So in practice, it behaves like English the one ... the other rather than simply counting.

It is common and normal in both speech and writing. However, the exact punctuation and the very compressed style of herstel; ... vervang make this particular example feel a bit more written or note-like.

In everyday speech, a speaker would often use a fuller version, such as:

Aan die een kant kan ons dit herstel, maar aan die ander kant kan ons dit vervang.

A rough guide:

• aan ≈ ahn
• die ≈ dee
• een ≈ somewhere between een and ayn, depending on accent
• kant ≈ kahnt
• maar ≈ mahr
• ander ≈ AHN-der
• herstel ≈ hair-STEL or hehr-STEL
• vervang ≈ fur-FAHNG / ver-FAHNG

A few useful notes:

• Afrikaans r is usually trilled or tapped more than in English.
• g in vervang is not an English g sound; it is usually a throaty sound, depending on accent.
• Stress often falls on the second syllable in herstel and vervang.

No. Kant literally means side, not hand. English uses on the one hand / on the other hand idiomatically, but Afrikaans uses side here.

So you should understand the Afrikaans expression as an idiom, not translate each word mechanically into English.